Where every figure came from
U.S. Energy Information Administration, U.S. Crude Oil Imported Acquisition Cost by Refiners, annual (series R1300____3) (What imported crude cost US refiners, 1972 to 1974): https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=R1300____3&f=A. Public domain (US government). Dollars a barrel, nominal, annual average: 4.08 (1973), 12.52 (1974). "More than three times" is calculated by Ceteris: 12.52 / 4.08 = 3.07. This is the cost of all imported crude delivered to US refiners, a different measure from the Saudi Arabian Light price. Release date 1 October 2026. Retrieved 1 October 2026.
World Bank, Commodity Price Data (The Pink Sheet), annual, updated 3 January 2025 (CMO-Historical-Data-Annual.xlsx) (Saudi Arabian Light crude, 1973 and 1974): https://www.worldbank.org/en/research/commodity-markets. World Bank data, CC BY 4.0, credited. Sheet "Annual Prices (Nominal)", column "Crude oil, Dubai", which the Description sheet says refers to Saudi Arabian Light, 34 API, for 1960 to 1984: 2.8075 (1973), 10.975 (1974) dollars a barrel, printed as $2.81 and $10.97; 1.82 for 1972. Nominal, annual. Retrieved 1 October 2026.
U.S. Energy Information Administration, U.S. Imports of Crude Oil, thousand barrels per day, monthly (series MCRIMUS2) (The episode chart: US crude imports, 1973 and 1974): https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=MCRIMUS2&f=M. Public domain (US government). Thousand barrels a day, monthly; the chart shows millions. 1973: 2,732 (Jan) rising to 3,739 (Oct), 3,452 (Nov), 2,891 (Dec); 1974: 2,382 (Jan), 2,248 (Feb), 2,462 (Mar), 3,267 (Apr), 3,908 (May). Printed as 3.74, 2.25 and 3.91 million. The fall from October to February, about 40 per cent (1,491 / 3,739 = 0.399) and about 1.5 million barrels a day, is calculated by Ceteris. The series records imports from all sources; it does not say how much of the fall the embargo caused. On the monthly totals (series MCRIMUS1) the same months read 115,905 and 62,940 thousand barrels, a larger fall because February is a short month. Retrieved 1 October 2026.
U.S. Energy Information Administration, U.S. Product Supplied of Crude Oil and Petroleum Products, thousand barrels per day, annual (series MTTUPUS2) (How much oil the US used in 1973): https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=MTTUPUS2&f=A. Public domain (US government). Product supplied, the EIA measure of consumption: 17,308 thousand barrels a day in 1973 (16,653 in 1974). Printed as about 17.3 million. Retrieved 1 October 2026.
Council of Economic Advisers, Economic Report of the President, February 1974 (via FRASER) (The embargo, US price controls, the shortage and how it was shared out): https://fraser.stlouisfed.org/files/docs/publications/ERP/1974/ERP_1974.pdf. Public domain (US government). Printed page numbers. P. 36: imports have provided a rapidly expanding share of the domestic market; p. 116: imports of crude and products rose from 22 percent of domestic consumption in 1969 to 36 percent in 1973. P. 24: prices of oil imported into the United States are free from price control, as are prices of "new" oil and of oil from small (stripper) wells; prices of petroleum products rose very rapidly after October 1973 but had not risen enough by the end of January to eliminate shortages; it is probably reasonable to assume the curtailment would increasingly show up in higher domestic prices rather than in shortages; the remaining shortages are distributed by allocations and other controls, by voluntary conservation, and to some extent by a first-come-first-served process; "In time, and despite the existence of the price controls, prices might rise enough to clear the market." P. 25: the view that output need not be badly hurt has been fortified since it appears that the net curtailment of imports may be less than initially feared; the supply should be concentrated in the uses most essential for production and employment, partly by higher prices, supplemented by voluntary conservation and mandatory allocations. P. 22: the high inflation, the slowdown of output and of demand are intensified by the higher prices and reduced imports of oil; large increases in crude oil prices have not yet been fully reflected in retail prices. P. 33: imported oil, "new" oil and oil from small wells are exempt from control; other oil is controlled and sells well below uncontrolled oil, though the control price was raised on two occasions; the Federal Energy Office (FEO) encouraged refineries to limit gasoline output to increase products more essential to industrial output, which "does not solve the question of who gets the available gasoline"; the FEO has prepared for coupon rationing of gasoline, though more supply, higher prices and largely voluntary conservation are expected to make it unnecessary; the Emergency Petroleum Allocation Act of 1973 requires mandatory allocation of oil products, with limits on what refineries or distributors deliver to classes of customers (stopping short of individual consumers), set as percentages of current requirements or base-period use; such a system "necessarily involves elaborate paperwork and a large degree of arbitrariness". P. 34: voluntary conservation seems to have been highly effective, especially in stretching out supplies of gasoline and home heating oil. P. 118: near the close of 1973 the FEO projected that reduced imports would leave a deficit of 2.7 million barrels a day in the first quarter of 1974, 14 percent of US petroleum consumption, a projection that by its own terms overstates the cut needed. P. 119: "new" oil is all oil produced on a property in excess of output in the same month of 1972; the ceiling price on old oil was raised late in 1973; the President recommended that Congress enact an Emergency Windfall Profits Tax (pp. 119-120); "These considerations argue for letting energy prices rise so that markets will clear, and for initiating a tax to limit windfall profits"; market clearing in the short run would need very large price increases for a year or two, and higher profits raise problems of equity; holding prices down instead means excess demand and controls, allocations and rationing, which data limitations make impossible to design efficiently. Household cuts such as lower thermostats and less driving, unlike reductions in industrial output, generate little unemployment (p. 119). P. 211: most Arab states cut back oil production and exports and imposed an embargo on shipments to the United States, the Netherlands and several other countries, to pressure third countries to support their cause; if sustained, these controls would probably be felt most intensely in Japan and Western Europe because of their high dependence on imported energy (pp. 211-212). Retrieved 1 October 2026.
Council of Economic Advisers, Economic Report of the President, February 1975 (via FRASER) (The dates of the war, the embargo and the price rise): https://fraser.stlouisfed.org/files/docs/publications/ERP/1975/ERP_1975.pdf. Public domain (US government). P. 43: the outbreak of war in the Middle East in early October 1973, the embargo in late October, and the oil price rise in late December. Retrieved 1 October 2026.
U.S. Department of State, Office of the Historian, Milestones: Oil Embargo, 1973-1974 (Why the embargo was imposed, and when it ended): https://history.state.gov/milestones/1969-1976/oil-embargo. Public domain (US government). The Arab members of OPEC imposed the embargo on the United States in retaliation for the US decision to re-supply the Israeli military, and to gain leverage in the post-war peace negotiations; it was extended to other countries that supported Israel, including the Netherlands, Portugal and South Africa; it banned petroleum exports to the targeted nations and introduced cuts in oil production; the embargo's organisers linked its end to US efforts to bring about peace between Israel and its Arab neighbours, and the prospect of a negotiated end to hostilities between Israel and Syria was enough to convince the parties to lift it in March 1974. A photograph on the page (Library of Congress, U.S. News & World Report collection) is captioned: cars wait in long lines during the gas shortage. Retrieved 1 October 2026.
Office for National Statistics, Consumer price inflation, historical estimates and recent trends, UK: 1950 to 2022 (The oil shock and British inflation; the date of the war): https://www.ons.gov.uk/economy/inflationandpriceindices/articles/consumerpriceinflationhistoricalestimatesandrecenttrendsuk/1950to2022. Open Government Licence v3.0. Section 4: the oil crises of 1973 and 1979 and several exchange rate shocks "put strong upward pressure on inflation at the time"; the rise in crude oil prices followed the war that began on 6 October 1973; the 12-month growth rate of crude oil prices rose from 44% in September 1973 to 119% in October 1973, and again from 119% to 525% from December 1973 to January 1974; the modelled peak in UK inflation came later, "consistent with trends seen more recently as oil price shocks take time to feed through to the wider economy". Retrieved 1 October 2026.
U.S. Bureau of Labor Statistics, Consumer Price Index for All Urban Consumers: Energy in U.S. City Average (CPIENGSL), via FRED, Federal Reserve Bank of St. Louis (US consumer energy prices, 1973 and 1974): https://fred.stlouisfed.org/series/CPIENGSL. Public Domain: Citation Requested (tag on the series page, checked 1 October 2026). Monthly index, seasonally adjusted. Change on the same month a year earlier, calculated by Ceteris: 6.5 per cent (September 1973), 32.2 per cent (June 1974). Retrieved 1 October 2026.
Agency for Natural Resources and Energy (Ministry of Economy, Trade and Industry, Japan), "Japan's energy, 150 years of history (4)", 29 May 2018 (Japanese) (Japan in the 1973 oil shock): https://www.enecho.meti.go.jp/about/special/johoteikyo/history4shouwa2.html. Japanese government web content; paraphrased in English. In the late autumn of 1973 toilet paper and detergent disappeared from supermarket shelves across Japan, with hoarding, and some shops withheld goods from sale (売り惜しみ) or raised prices opportunistically (便乗値上げ); an oil-saving campaign asked people to give up Sunday drives and drive slowly on motorways; a law on the proper supply and demand of oil was enacted in 1973; the page says the shock overturned the boom of the years before and became a turning point of the era, and that Japan's economy shrank in fiscal 1974 for the first time since the war. Retrieved 1 October 2026.
All wording is our own. Charts are drawn from the data named under them.