Event_Log
0119861986 oil price collapseCorrelationExpected causation
Saudi Arabia abandons its swing-producer role; oil prices crash from ~$27 to under $10/barrel, straining every oil-exporting economy in this database (Saudi Arabia, Venezuela, USSR, Iran).
Why this link: Fuel's share of merchandise exports directly tracks the world price of oil; the 1986 collapse mechanically depressed the value (though not necessarily volume) of Iran's dominant export category.
Caveat: Value share also depends on non-oil export growth, which was minimal during the war economy.
Lag: Same year.Source: US Energy Information Administration0220032000s commodity super-cycleCorrelationExpected causation
China's post-2001 WTO-driven infrastructure boom, alongside strong global growth, drives the IMF commodity price index up roughly fourfold between January 2000 and mid-2008; crude oil rises from about $30/barrel in 2003 to a record $147/barrel on 11 July 2008, delivering a sustained fiscal windfall to every oil exporter in this database (Iran, Saudi Arabia, Venezuela, Russia) before the Global Financial Crisis abruptly ends the cycle.
Why this link: The fuel share of merchandise exports rose with the price boom, since Iran's non-oil export base grew far more slowly than the oil windfall.
Caveat: Some of the rise also reflects stagnation in manufactured and agricultural export competitiveness, a separate domestic story.
Lag: Same year.Source: US Energy Information Administration··2003Iraq War beginsCorrelationExpected causation
US-led invasion halts roughly 2 million barrels/day of Iraqi oil production; global crude prices spike toward $40/barrel before Saudi Arabia and other OPEC members raise output to offset the loss, averaging $30/barrel for 2003 overall (up 19% from 2002).
Why this link: Post-Saddam Iraq rapidly became one of Iran's largest export markets for consumer goods, food, and construction materials, a structural shift traceable to the 2003 regime change.
Caveat: The trade relationship built up gradually over subsequent years and also depended on Iran's own export-promotion policy and sanctions-driven regionalization of trade.
Lag: 2-5 years.Source: Middle East Research and Information Project (MERIP)032008Global Financial Crisis — Lehman Brothers collapseCorrelationExpected causation
Triggers a synchronized global recession; oil prices crash from ~$147 to ~$40/barrel within months, hitting every oil exporter in this database simultaneously, while credit-driven European economies (Spain, Portugal, Greece) enter prolonged crises.
Why this link: The current-account surplus, dominated by oil exports, contracted sharply as export revenue collapsed with the oil price.
Caveat: Import compression in response to the shock also affected the balance, partly offsetting the export-side drop.
Lag: Same to next year.Source: Federal Reserve History042015Iran nuclear deal (JCPOA) signedCorrelationExpected causation
Iran and the P5+1 finalize the Joint Comprehensive Plan of Action in Vienna, exchanging nuclear-program limits for the lifting of UN, EU and US nuclear-related sanctions; roughly $100bn in frozen Iranian assets are released after IAEA-verified implementation begins in January 2016.
Why this link: Sanctions relief beginning in January 2016 allowed Iran to roughly double its oil exports within a year, directly lifting fuel's share of merchandise exports.
Caveat: The recovery in export volume was also constrained by upstream investment shortfalls after years of underinvestment, so the rebound was not as complete as sanctions relief alone would predict.
Lag: 6-12 months (implementation began January 2016).Source: European External Action Service052018US withdraws from the JCPOACorrelationExpected causation
President Trump announces US withdrawal from the Iran nuclear deal and directs the phased reimposition of all sanctions lifted in 2015-16, with full "snapback" effective 5 November 2018, reversing the 2015 sanctions-relief framework and re-isolating Iran's oil and banking sectors from the dollar system.
Why this link: Snapback sanctions from November 2018 cut Iran's oil exports by roughly two-thirds within a year, a direct and well-documented collapse in the fuel share of merchandise exports.
Caveat: None significant: the mechanism (US secondary sanctions on oil buyers) and the export data are both well documented and closely aligned in timing.
Lag: Within 6 months of the November 2018 snapback.Source: OFAC — May 2018 Guidance on Reimposing Certain Sanctions with Respect to Iran062020COVID-19 declared a pandemicCorrelationExpected causation
WHO declaration triggers synchronized global lockdowns, an oil-demand collapse (WTI briefly trades negative on 20 April 2020), and unprecedented fiscal/monetary stimulus across every country in this database.
Why this link: International tourist arrivals to Iran collapsed with global travel restrictions in 2020, a direct and near-universal effect of pandemic lockdowns on cross-border travel.
Caveat: Iran's tourism sector was already constrained by sanctions-related banking and visa friction before the pandemic.
Lag: Immediate, within months.Source: World Health Organization··2022Russian invasion of UkraineCorrelationExpected causation
Triggers sweeping Western sanctions on Russia, a global energy-price shock benefiting other oil/gas exporters (Iran, Saudi Arabia, Venezuela partially re-engaged by the West for supply), and a European inflation surge affecting Spain, Portugal, Greece.
Why this link: Western sanctions on Russia deepened Iran-Russia economic cooperation (barter arrangements, sanctions-evasion trade routes, and a 2023 free-trade agreement), a structural shift in Iran's trade relationships traceable to this event.
Caveat: The scale of this shift within Iran's aggregate merchandise export figures is modest relative to the still-dominant role of oil, and much of the increased cooperation runs through channels not fully captured in official trade statistics.
Lag: 1-2 years.Source: OFAC — Russia-related sanctions
Related_Laws
Laws related to this measure. Correlation = how closely this law tracks this measure's story. Expected causation = how strongly we would expect it to have moved the line. Neither is a claim of proof.
1983CorrelationExpected causationAct Requiring the Government to Submit an Annual Import and Export Regulations Bill
This act requires the government to submit an annual bill setting import and export regulations.
Why this link: This 1983 law obliges the government to submit an annual foreign-trade regulation bill, which for four decades has been the legal vehicle setting Iran's yearly import/export lists, licensing and tariff regime, a recurring structural driver of trade volumes.
Caveat: The law sets a procedural requirement, not the substantive content of any single year's regulations, so its effect works only through the annual bills it produces and cannot be separated from oil revenue, sanctions and exchange-rate swings that dominate trade volumes.
Lag: Annual, renewed each fiscal year since 1983.1989CorrelationExpected causationAct on the Addition of a Note to Article 41 of the Export and Import Law
This law adds a new note (tabsareh) to Article 41 of the Export and Import Law.
Why this link: This 1989 addition of a note to Article 41 of the Export-Import Law adjusts the rules governing permitted, conditional, and prohibited trade goods, arriving at the start of Iran's post-war reconstruction period when trade policy was being actively reshaped.
Caveat: Trade volumes in 1989 and after were dominated by post-war reconstruction demand, the shift from wartime rationing, and oil-revenue recovery, not by this single clause addition; its isolated effect on trade series cannot be separated from those larger shifts.
Lag: 1-3 years2002CorrelationExpected causationAmendment to Commercial Profit Rates and Tariff Footnotes of the Export and Import Regulations Bylaw
Issued in 2002, this cabinet decision amends the executive bylaw of the Export and Import Regulations Act, adjusting commercial profit (customs surcharge) rates and licensing conditions for specific tariff lines such as toys, forklifts, motorcycle engines and industrial motors.
Why this link: Tariff and commercial-profit-rate schedules are a real, named channel affecting the cost and competitiveness of traded goods, directly shaping merchandise export and import volumes and values.
Caveat: Trade volumes in this period are dominated by oil export revenue swings and broader macroeconomic and exchange-rate conditions, not tariff schedule adjustments alone.
Lag: 1-2 years2008CorrelationExpected causationCabinet Resolution Ratifying the Amendments to the Tariff Schedules Annexed to the Executive Bylaw of the Export and Import Regulations Act (for 2008)
Approved by the cabinet in 2007-2008, this resolution ratified hundreds of specific changes to Iran's customs tariff schedule (HS-code rate adjustments) attached to the Export and Import Regulations Bylaw, mostly lowering or raising import duties on individual goods, from pharmaceuticals to textiles to chemicals, largely to protect or support domestic production.
Why this link: This 2008 decision amends the executive bylaw implementing Iran's Export/Import Regulations Act, directly governing the licensing and customs treatment of traded goods for the affected years.
Caveat: Trade volumes in this period are dominated by oil-revenue-driven import demand and, from 2010 onward, escalating international sanctions, overshadowing this specific bylaw amendment.