Year	constant 2015 US$
1971	2111971135.1603165
1972	2239202263.3555384
1973	2331140692.683638
1974	2318594708.1606402
1975	2156381411.1481028
1976	2145108379.2064726
1977	2159101080.0861855
1978	2241916145.1867833
1979	2504769546.6275663
1980	2717458254.7781005
1981	2855303376.137117
1982	2723409969.20921
1983	2597305715.917429
1984	2745353838.3032727
1985	3010450668.728157
1986	2972684576.0473065
1987	2911432619.0237384
1988	3041580767.285728
1989	2852575083.1548815
1990	3152003244.5754037
1991	3329367455.3094525
1992	3208916488.481477
1993	3508088238.860158
1994	3186551418.453944
1995	3378673193.7912965
1996	3594162782.0799437
1997	3861207424.0887957
1998	4024753030.9862685
1999	4451781951.884103
2000	4842524778.583189
2001	5202357359.264755
2002	5630680440.355486
2003	5915561740.501868
2004	6304061229.878459
2005	6340590383.475903
2006	6583997263.642853
2007	6948495565.876971
2008	7313893266.058514
2009	7485275922.891664
2010	7630535737.526372
2011	7992359188.259716
2012	8485110334.246271
2013	9320889372.228529
2014	9898950461.518738
2015	10210946433.7156
2016	10668526525.896608
2017	11064764487.739073
2018	11757990112.561369
2019	12696001457.283998
2020	13042691496.301346
2021	14124930711.144268