Year	constant 2015 US$
1960	419717902.8508906
1961	311329206.0526682
1962	537792386.4972032
1963	763794310.4067298
1964	945057092.1482081
1965	444624245.70735997
1966	785070505.0106726
1967	777375448.6175885
1968	780439867.8078135
1969	1027889229.5780901
1970	1147563147.040894
1971	1344471037.6586185
1972	1512205834.2483182
1973	1918631657.678884
1974	2244368604.1271267
1975	2470174752.3022246
1976	2327029906.091187
1977	2497301506.4687943
1978	2564393755.8088803
1979	2774663303.603035
1980	2867628597.4143043
1981	2479265823.491765
1982	2176313180.002092
1983	2418717020.8046875
1984	2138652569.8773453
1985	2035015722.3664324
1986	2573971212.569029
1987	3286931777.7563663
1988	3108046626.7259274
1989	3534493561.9680357
1990	3231831499.675834
1991	3058327479.0778303
1992	3755720664.6323047
1993	4322888616.519864
1994	4971528929.104404
1995	5178494908.826415
1996	5609621940.1601715
1997	6809839562.978182
1998	9776011025.814405
1999	9649635200.798529
2000	10573223308.647587
2001	10669872843.241127
2002	11083210630.735172
2003	8739172492.988905
2004	8608982986.030113
2005	9894487062.432768
2006	11567438993.080399
2007	13171937754.559664
2008	14224168541.480175
2009	11698984710.090242
2010	13988596235.9411
2011	13262902308.181099
2012	13187435930.459854
2013	12913457034.599905
2014	14055886390.059828
2015	16682562013.57654
2016	18635261577.32996
2017	18477245962.97825
2018	21804325687.76258
2019	23528830066.810604
2020	17314824910.08059
2021	20138610401.742825
2022	21013302908.184074
2023	21438278991.800247