Year	current US$
1990	39503372.7094234
1991	43295276.8608167
1992	48091428.620703
1993	55106552.3568134
1994	62528538.4088833
1995	70320849.6358202
1996	76880570.3802992
1997	86588405.4666646
1998	77378557.4242802
1999	78636963.2578743
2000	87610805.1377271
2001	91406220.7133355
2002	93105757.820015
2003	115991113.095514
2004	112518420.840556
2005	116098563.381291
2006	184418891.544449
2007	183878188.223525
2008	212286516.770165
2009	217349540.708407
2010	204906001.580373
2011	218642074.915642
2012	226811360.2701
2013	233066034.652953
2014	238388956.686114
2015	222546044.619257
2016	250303525.821366
2017	272770605.236294
2018	295407740.654685
2019	285044646.891348
2020	299364891.925673
2021	315562355.832104