1979 oil crisis

A drop in oil production in the wake of the Iranian Revolution led to an energy crisis in 1979. Although the global oil supply only decreased by approximately four percent, the oil markets' reaction raised the price of crude oil drastically over the next 12 months, more than doubling it to . The sudden increase in price was connected with fuel shortages and long lines at gas stations similar to the 1973 oil crisis. In 1980, following the onset of the Iran–Iraq War, oil production in Iran fell drastically. Iraq's oil production also dropped significantly, triggering economic recessions worldwide. Oil prices did not return to pre-crisis levels until the mid-1980s. Oil prices after 1980 began a steady decline over the next 20 years, except for a brief uptick during the Gulf War, which then reached a 60% fall-off in the 1990s. Mexico, Nigeria, and Venezuela's major oil exporters expanded their production during this time. The Soviet Union became the largest oil producer in the world, and oil from the North Sea and Alaska flooded the market. Iranian Revolution and Iran–Iraq War In November 1978, a strike consisting of 37,000 workers at Iran's nationalized oil refineries reduced production from per day to about . Foreign workers left the country. However, by bringing navy personnel into crude oil production operations, the government fixed short-term disruptions and by end of November the output came back to almost normal level. On January 16, 1979, the Shah of Iran, Mohammad Reza Pahlavi, and his wife, Farah Pahlavi, left Iran at the behest of Prime Minister Shapour Bakhtiar, who sought to calm the situation. After the departure of the Shah, Ayatollah Khomeini became the new leader of Iran. The rise in oil prices benefited a few members of the Organization of Petroleum-Exporting Countries (OPEC), which made record profits. Under the new Iranian government, oil exports later resumed but production was inconsistent and at a lower volume, further raising prices.