Table R4.5      Conventional crude oil reserves as of each year-end (106 m3)
Year  Changes to initial established reserves Initial established reserves Cumulative production Remaining established reserves
New discoveries EOR additions Development Revisions Net changes
1968 62.0       119.8 1 643.1 430.3 1 212.8
1969 40.5       54.5 1 697.5 474.7 1 222.8
1970 8.4       36.7 1 734.4 526.5 1 207.9
1971 14.0       22.1 1 756.5 582.9 1 173.6
1972 10.8       20.0 1 776.0 650.0 1 126.0
1973 5.1       9.2 1 785.7 733.7 1 052.0
1974 4.3       38.5 1 824.2 812.7 1 011.5
1975 1.6       7.0 1 831.1 880.2 950.9
1976 2.5       -18.6 1 812.5 941.2 871.3
1977 4.8       19.1 1 831.6 1 001.6 830.0
1978 24.9       24.4 1 856.1 1 061.6 794.5
1979 19.2       34.3 1 890.3 1 130.1 760.2
1980 9.0       22.8 1 913.2 1 193.3 719.9
1981 15.0 7.2     32.6 1 945.8 1 249.8 696.0
1982 16.8 6.6     6.9 1 952.8 1 303.4 649.4
1983 21.4 17.9     64.1 2 016.8 1 359.0 657.8
1984 29.1 24.1     42.0 2 058.9 1 418.2 640.7
1985 32.7 21.6     64.0 2 123.0 1 474.5 648.5
1986 28.6 24.6 16.6 -30.7 39.1 2 162.4 1 527.7 634.7
1987 20.9 10.5 12.8 -11.2 33.0 2 195.4 1 581.6 613.8
1988 18.0 16.5 18.0 -15.8 36.7 2 231.7 1 638.8 592.9
1989 17.0 7.8 12.9 -16.3 21.4 2 253.1 1 692.6 560.5
1990 13.0 8.4 7.2 -25.6 3.0 2 256.1 1 745.7 510.4
1991 10.2 9.1 10.6 -20.5 9.4 2 265.6 1 797.1 468.5
1992 9.0 2.8 12.3 +3.0 27.1 2 292.7 1 850.7 442.0
1993 7.3 7.9 14.2 +9.8 39.2 2 331.9 1 905.1 426.8
1994 10.5 5.7 11.1 -22.6 4.7 2 336.5 1 961.7 374.8
1995 10.2 9.2 20.8 +14.8 55.0 2 391.6 2 017.5 374.1
1996 9.7 6.1 16.3 -9.5 22.6 2 414.1 2 072.3 341.8
1997 8.5 4.2 16.1 +8.7 37.5 2 451.6 2 124.8 326.8
1998 8.9 2.9 17.5 +9.2 38.5 2 490.1 2 174.9 315.2
1999 5.6 2.1 7.2 +16.6 31.5 2 521.5 2 219.9 301.6
2000 7.8 1.5 13.4 +10 32.8 2 554.3 2 262.9 291.4
2001 9.1 0.8 13.6 +5.2 28.6 2 583.0 2 304.7 278.3
2002 7.0 0.6 8.1 +4.6 20.2 2 603.3 2 343.0 260.3
2003 6.9 1.0 5.9 +17.1 30.8 2 634.0 2 380.1 253.9
2004 6.1 3.2 8.0 +13.6 30.9 2 664.9 2 415.7 249.2
2005 5.5 1.2 13.2 +18.9 38.8 2 703.7 2 448.9 254.8
2006 8.2 1.9 14.8 +2.2 27.1 2 730.8 2 480.7 250.1
2007 6.8 2.2 11.8 -0.2 20.6 2 751.6 2 510.9 240.7
2008 6.9 6.2 9.3 -0.7 21.7 2 773.1 2 540.1 233.0
2009 4.0 4.8 7.4 +5.8 21.8 2 794.9 2 566.5 228.4
2010 3.8 5.8 23.5 +1.7 34.8 2 829.7 2 592.8 236.9
2011 4.0 6.4 14.0 +9.0 33.5 2 863.2 2 617.3 245.9
2012 5.8 2.2 52.9 -2.4 58.5 2 921.7 2 652.5 269.2
2013 4.9 2.2 30.8 +10.1 50.0 2 970.0 2 687.0 283.4
2014 4.3 6.8 26.7 +2.2 40.0 3 010.0 2 721.8 288.2
2015 2.3 2.0 15.9 +2.6 22.8 3 032.9 2 752.1 280.7
2016 1.5 3.2 2.9 +6.1 13.7 3 046.6 2 778.5 267.8