Year	current US$
1990	5452919.54577931
1991	4739423.79837343
1992	5358376.44798919
1993	5889249.8701938
1994	6150348.04021803
1995	6420599.31457489
1996	7003613.03671462
1997	7450245.21223692
1998	8388383.4375879
1999	7100403.00296833
2000	7981492.840937
2001	8733078.41210212
2002	9068742.62920668
2003	10086183.5568434
2004	12354964.1406347
2005	15588385.3649232
2006	16921414.2352036
2007	16482078.4360297
2008	14492380.002835
2009	14913438.1643028
2010	20862117.6388132
2011	25354129.7169845
2012	29516545.742871
2013	29739355.7054036
2014	41078324.4507698
2015	43813751.5499212
2016	50635290.3410403
2017	47893877.7401142
2018	44271982.3899234
2019	48119124.3768522
2020	49897725.6900975
2021	57754235.1381326