Year	current US$
1979	9883418.083
1980	10342744.83
1981	12321170.81
1982	8150582.314000001
1983	8672392.845
1984	8220974.922
1985	11009452.82
1986	14123473.17
1987	13667151.45
1988	12165634.16
1989	21101123.81
1990	21540834.43
1991	25278581.62
1992	22089290.62
1993	23284851.07
1994	28412874.22
1995	29509363.17
1996	40048458.1
1997	36365524.29
1998	37597831.73
1999	40413784.03
2000	2219278.63444078
2001	3814692.52945502
2002	3892612.93658879
2003	3827913.09051076
2004	16142844.7421348
2005	7870360.77755255
2006	9759800.79715804
2007	9142800.85193865
2008	12870527.1515127
2009	7158571.44240257
2010	9631117.09562084
2011	10533776.7698607
2012	8225967.42108577
2013	8469046.51128769
2014	10660484.3747005
2015	9666037.82031006
2016	13015472.7656233
2017	14917363.2306714
2018	15730151.2680625
2019	11256018.1127447
2020	7445206.26030685
2021	12191943.4907483
2022	13569840.5048403