Year	constant 2015 US$
1976	290996304.3175392
1977	290996304.3175392
1978	291306535.11786807
1979	303095299.56473464
1980	199478278.39776924
1981	243220791.1219072
1982	290375842.7168814
1983	252608004.0770425
1984	254505887.74745682
1985	283163894.0420823
1986	313529995.6417608
1987	301929385.57668644
1988	287351360.0408504
1989	266202956.37695092
1990	291765834.2969651
1991	287149899.0859404
1992	305102785.976225
1993	287177809.4388674
1994	270586978.9364587
1995	290776475.02727956
1996	307324888.73187125
1997	318494551.4072037
1998	316056116.2204647
1999	235481552.82818094
2000	313713287.1494402
2001	340317871.8699728
2002	280651446.9097322
2003	289268683.8480961
2004	316704596.05644643
2005	303425883.2843476
2006	306263739.6420738
2007	299412951.9687565
2008	307446641.14154744
2009	338808898.7712828
2010	337537944.2685638
2011	349313105.48319215
2012	353178338.0218279
2013	354937645.78816384
2014	367951787.93676794
2015	368859590.32082313
2016	382415048.66337454
2017	381857206.1770221
2018	376935014.18863124
2019	392823287.6274815
2020	385310251.6379594
2021	413315469.7758374
2022	436159948.111664
2023	495605880.4017523