Year	constant 2015 US$
1970	3325661722.1103144
1971	3591629068.480427
1972	3712526919.1620736
1973	3517172476.7299137
1974	5304011801.7995615
1975	6226259122.928583
1976	5960806909.976649
1977	8338940147.819661
1978	7185199793.6909075
1979	8124288015.029597
1980	8090447712.02005
1981	7421923412.167522
1982	6274879792.475085
1983	6199551436.478425
1984	6131197194.450946
1985	8503545087.751342
1986	7572263118.980428
1987	8972593877.826286
1988	8660541903.353008
1989	9154317097.500502
1990	9257621160.66899
1991	9408793006.080486
1992	10644162194.166695
1993	10595184893.792223
1994	10873475816.551056
1995	10867888600.2462
1996	10426419260.867563
1997	10256821489.344309
1998	9605930602.652494
1999	10713427826.087873
2000	10455940368.293924
2001	11539147069.779829
2002	11539147069.779829
2003	11820409916.105078
2004	16569306021.346397
2005	20876178028.14335
2006	18225341083.846355
2007	20288054167.174156
2008	21838526504.595154
2009	16824376314.63966
2010	19367352246.299664
2011	16230744488.660715
2012	8841749989.609041
2013	7198593262.563535
2014	6156795362.76964
2015	6058999264.610904
2016	5907312285.781227
2017	7754422220.777713
2018	7271068571.9364395
2019	7112486730.432687
2020	6275196797.655501
2021	13930951156.028332