Year	current US$
1983	26228001.3
1993	51510849.4
1994	52763177.39
1995	54975733.77354
1996	54060778.21828
1997	49414475.97357
1998	51876009.33882
1999	53406614.05973
2000	56555013.88425
2001	58130867.81461
2002	58306713.56747
2003	58878153.19219
2004	58380364.63058
2005	61111928.26507
2006	61927524.59018
2007	63124561.11798
2008	63885811.13409
2009	70120159.78544
2010	72660353.52576
2011	75814471.52714
2012	80954639.94768
2013	80977867.08757
2014	81437778.63469
2015	88809430.1316
2016	91443619.35766
2017	98427001.92001
2018	97397422.91042
2019	108290927.89
2020	107369403.52
2021	105178751.06187