Year	current US$
1986	25728632.2033873
1987	26842732.5704215
1988	31543343.5839862
1989	40806274.5484145
1990	45419063.3402819
1991	59832127.2796565
1992	66016035.6753366
1993	67111710.9718434
1994	68978090.9872096
1995	68648671.3941689
1996	75601267.760666
1997	73455697.2051732
1998	69375306.4044121
1999	59190644.3640351
2000	55814731.7703912
2001	55670095.8275331
2002	70021628.0938807
2003	73942873.9019431
2004	69287554.7390379
2005	48007686.8847114
2006	64957374.0026111
2007	80993389.0149767
2008	72200866.1792277
2009	220691343.923434
2010	248692333.364143
2011	215516608.425052
2012	193914483.552515
2013	244723633.043561
2014	186341827.895455
2015	194077341.254
2016	191764254.430407
2017	210038417.40588
2018	247748978.670617
2019	243430986.442765
2020	307540353.484809
2021	339954492.74312