Year	current US$
1978	10350000
1979	13350000
1980	19819105.843
1981	18400687.555
1982	17742741.679
1983	17890073.1175
1984	20320032.734
1985	21069203.007999998
1986	25401150.949
1987	29788398.6355
1988	39759306.019
1989	45531469.2275
1990	55577371.6532325
1991	60748314.56022
1992	67932418.243127
1993	74430169.252377
1994	81064869.49731201
1995	84256164.07644
1996	91383391.6421085
1997	95373761.791039
1998	104275749.130106
1999	96673975.514358
2000	107468160.3815265
2001	122067110.911615
2002	135848818.338918
2003	140341483.361346
2004	148893775.2103655
2005	157219126.1526095
2006	175024579.954587
2007	188590307.3489375
2008	192459421.028931
2009	176369363.696767
2010	199857149.24339747
2011	207797962.7067715
2012	224543854.7879395
2013	243080511.34098598
2014	258212712.89999998
2015	299766402.9325585
2016	335995394.5088205
2017	335234291.3461735
2018	351386157.6864235
2019	364899963.621337
2020	286263448.726915
2021	341726851.6124705
2022	431520918.814784
2023	488000000