Year	current US$
1989	125389655.12998
1990	126739862.068965
1991	125856679.786988
1992	146424186.617557
1993	168333952.221809
1994	118844672.899044
1995	137647796.260759
1996	148742812.997163
1997	151119223.150593
1998	202557361.376673
1999	218960000
2000	218441980.348028
2001	194861941.429927
2002	193881659.788899
2003	207015005.481
2004	235855103.121524
2005	270215270.737204
2006	306726598.275534
2007	309352667.765906
2008	339807530.09314
2009	236287656.934553
2010	276219948.661533
2011	424837557.644192
2012	498860670.088849
2013	538598852.599093
2014	570014890.665309
2015	497533111.521539
2016	488232254.160131
2017	512674430.860723
2018	544702386.202685
2019	551857369.646954
2020	493485655.033656
2021	562459419.551448