Year	constant 2010 US$
1973	30400668637.2355
1974	31147780335.8367
1975	31275089334.3055
1976	36321142348.505
1977	40556582901.618
1978	43956095335.7639
1979	48979867710.7993
1980	53600273459.7519
1981	58346144906.6952
1982	59958677315.1503
1983	63335339652.1621
1984	69616773371.9247
1985	69909532851.7398
1986	77563855645.8758
1987	87853894857.5938
1988	95603484120.823
1989	97725724341.0319
1990	101001497992.435
1991	106112651924.528
1992	112487635321.459
1993	124966205038.912
1994	131997478971.972
1995	136076769078.409
1996	139249624066.95
1997	147593478700.766
1998	142013143177.503
1999	145676192633.715
2000	154772455503.267
2001	158152802339.107
2002	157975168373.299
2003	166130635690.897
2004	179605846155.574
2005	189720873346.655
2006	206767162594.612
2007	222000568159.135
2008	232541210199.032
2009	220667590341.14
2010	233476805848.736
2011	246125701816.706
2012	247214211690.849
2013	256031433851.991
2014	263514563274.677
2015	269329116822.46
2016	276998243256.564
2017	292765039949.623
2018	303517367213.793