Ocean-Borne Trade Tonnage, Excl. Petroleum, 1950/51-1959/60
No WDI logistics/trade-tonnage indicator reaches this far back for Iran (WDI's Logistics Performance Index only starts 2007).
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.
1985CorrelationExpected causationExport and Import Regulations Act of 1985 (1364)
Passed in 1985 as that year's annual foreign trade law, this act requires a business card for commercial import and export activity, sorts goods into permitted, conditional and prohibited categories, and assigns import authorization power to the Ministry of Industry, Mines and Trade.
Why this link: The Law on Export and Import Regulations (1364/1985) is the foundational statute governing which goods may be traded, licensing, prohibited/restricted lists and the tariff-setting mechanism for Iran's foreign trade; it is the direct legal instrument behind Iran's post-revolutionary trade regime and remains the base law amended by later annual foreign-trade regulations.
Caveat: Actual trade flows in this period were dominated by war-economy rationing (1980-88), then sanctions and oil-price cycles; the law set the legal architecture but volumes moved mostly with these larger forces.
Lag: Ongoing framework effect from enactment (1985) through subsequent annual amendments.1993CorrelationExpected causationExport and Import Regulations Act
Passed in 1993, this law is Iran's core foreign trade statute, classifying goods into permitted, conditional and prohibited categories for import and export and requiring a business card for commercial trading, with the Ministry of Industry, Mines and Trade issuing import authorizations.
Why this link: The Export/Import Regulations Law is Iran's foundational national statute setting the legal framework for all foreign trade, the explicit instrument governing which goods may be traded, licensing, and trade policy administration.
Caveat: Trade volumes and values are heavily driven by oil prices, sanctions regimes, and exchange rates; the law sets the framework but does not itself determine trade flows.