Year	constant 2015 US$
1980	38134615.24031063
1981	39608489.0082798
1982	42136944.868908495
1983	44168379.40239901
1984	45983815.19526204
1985	47032418.08404343
1986	47910613.66017878
1987	48695384.17589483
1988	50004082.435494296
1989	48413614.19119508
1990	50878541.00938241
1991	48133339.05373215
1992	52239557.34282553
1993	53809845.68344399
1994	50970471.28755101
1995	52810571.22065309
1996	52128433.77868765
1997	54229384.00223275
1998	54924967.211661205
1999	55981791.53703193
2000	62054741.97600293
2001	63502434.30238243
2002	64978729.55877119
2003	66345949.30241067
2004	67619527.16936354
2005	69538164.08804241
2006	71378772.32554515
2007	68143587.45241861
2008	76524319.12514274
2009	79556962.21260494
2010	76248863.34771894
2011	78100429.09103693
2012	97192226.25211899
2013	103537490.39008832
2014	106222758.56094904
2015	131747506.04224062
2016	128218864.66300276
2017	142323185.9673349
2018	165291660.86983824
2019	153535045.0160264
2020	129795839.65053262
2021	132267019.69924618
2022	121488023.09976117
2023	123265896.57201363