Date published: March 1, 2012
Tables 11.1a and 11.1b Sources
All Other Countries and World, Annual Data
1973-1979: U.S. Energy Information Administration (EIA), International Energy Annual 1981, Table 8.
1980 forward: EIA, International Energy Database, March 2012.
All Other Countries and World, Monthly Data
1973-1980: Petroleum Intelligence Weekly (PIW), Oil & Gas Journal (OGJ), and EIA adjustments.
1981-1993: PIW, OGJ, and other industry sources.
1994 forward: EIA, International Energy Database, March 2012.