Year	current US$
1976	249360057.86005786
1977	398310442.3104423
1978	394668238.42497265
1979	391561739.4369151
1980	335450546.305756
1981	340024745.54007465
1982	338490886.55163056
1983	506872600.2571448
1984	279967074.5483541
1985	274311012.0195795
1986	437948766.3332156
1987	534519439.08925146
1988	931966219.7781456
1989	937320435.4063591
1990	874446496.4937177
1991	755782495.0736121
1992	921864706.4716053
1993	1857924564.3534393
1994	1413469950.7098682
1995	1562287281.070745
1996	1754169367.2322285
1997	1835535249.8768024
1998	1637246101.2311902
1999	1657173949.1117053
2000	1509222047.3320196
2001	1596304347.093513
2002	1552135820.4659119
2003	1685557062.6346943
2004	2108796863.3171515
2005	1689418791.1110787
2006	2080178083.309793
2007	1990654345.6179307
2008	849408544.9838493
2009	1569910009.0549335
2010	1774090384.8911812
2011	1239911191.4700906
2012	1629621009.4015589
2013	1703302213.7849462
2014	1970779279.1034572
2015	2586853521.6770797
2016	2985284126.9386477
2017	3192923246.686016
2018	3501752827.2159753
2019	3594574742.608722