Year	current US$
1975	496496369.3582317
1976	581420372.0511918
1977	586252383.6960855
1978	654419927.2845666
1979	1128937376.7063363
1980	1098789639.802781
1981	1259033239.167412
1982	791911392.0340359
1983	679299660.393511
1984	705933416.584199
1985	944295697.8143739
1986	846539968.8588369
1987	814603289.095354
1988	942553513.6549289
1989	1123291766.810299
1990	1053890554.852577
1991	756326999.999999
1992	1268660449.169457
1993	1027038953.931013
1994	1189071396.377234
1995	1124149981.990846
1996	1234767622.823172
1997	1506516416.982449
1998	1500218338.863229
1999	1298557669.144281
2000	1570978036.244855
2001	1400801047.77484
2002	1372755629.9583619
2003	1763354645.11472
2004	2516118086.18935
2005	3840410958.9041142
2006	7495445224.707845
2007	9104408577.16496
2008	11362439306.07022
2009	10890936912.440231
2010	8429203909.94612
2011	9502707023.86109
2012	8249937524.44634
2013	5594076751.918325
2014	5684118149.447852
2015	5466061203.16387
2016	4970074863.538134
2017	4722323510.050087
2018	7560892446.5634165
2019	7480069646.439537
2020	6615040558.316738
2021	7792588988.68665
2022	10054121337.550804
2023	10747819648.808813