Year	constant 2015 US$
1970	9111927870.876556
1971	9898814384.139835
1972	10644760981.251945
1973	11363060736.15546
1974	12222786770.688272
1975	13286146144.089052
1976	13632269785.448427
1977	13915654910.89452
1978	15016764350.885923
1979	15703693738.319908
1980	16817563686.066391
1981	16873389936.67108
1982	17421019980.687096
1983	17357218551.424595
1984	17236526848.695297
1985	17550218318.748814
1986	18010652854.203503
1987	17137583817.648035
1988	16284101012.15077
1989	16076980474.267567
1990	16948383022.461315
1991	17402906073.234753
1992	17919814814.822254
1993	17934599074.089832
1994	18673310537.642174
1995	19395577910.642567
1996	20080028646.278896
1997	21433669877.253895
1998	23077353311.01874
1999	24407489511.40585
2000	26460657539.174988
2001	29120064519.89452
2002	31082475502.723423
2003	32014407526.66522
2004	32556537715.28241
2005	33988110022.18202
2006	35630412112.39803
2007	37975724869.88476
2008	38280565755.60975
2009	37193813412.42303
2010	35486769026.01327
2011	36222779935.189835
2012	35388685867.45624
2013	34609865512.9078
2014	35610678316.125374
2015	36598735049.639435
2016	38222115507.01873
2017	39855976423.16287
2018	42083498854.12928
2019	44695901321.23748
2020	49312940612.76599
2021	52555549730.287865
2022	54912712085.446465
2023	55970143331.47264