Year	current US$
1972	715636691.0335444
1973	937299492.1077583
1974	1349108618.244735
1975	1670669661.5046086
1976	1903206963.0797534
1977	1998789793.6108816
1978	2439903391.889224
1979	3295657234.3588386
1980	4024254755.238587
1981	5082870113.976137
1982	5986607369.695264
1983	7394864322.122009
1984	8707464365.2155
1985	7962961354.988788
1986	7396365347.040009
1987	7918842725.828941
1988	10492370358.549223
1989	13028061017.058102
1990	15807610751.230156
1991	20448059795.077988
1992	24498163462.88037
1993	26889306791.950974
1994	35439662671.87803
1995	44428044801.128845
1996	47064943384.48585
1997	52365224691.506966
1998	44021099199.78729
1999	42204846336.13708
2000	44555364708.86821
2001	35990942446.93112
2002	35560665256.854515
2003	38471504040.33452
2004	46720146862.45404
2005	55758271986.85427
2006	71591565250.43007
2007	90418232539.95334
2008	85885680209.73839
2009	85160344811.45908
2010	121322648519.38387
2011	136351702805.12215
2012	139440544016.2938
2013	139995524654.35947
2014	148914881022.84836
2015	135661702398.48709
2016	143207394256.64444
2017	158298749026.92038
2018	157222786717.13882
2019	154169826651.3738
2020	143190030167.47882
2021	191068961854.61307
2022	208129735257.1161
2023	204919317733.96027