Year	current US$
1990	253015466.92416
1991	259643568.629809
1992	281716641.753032
1993	305680112.310059
1994	330068678.158368
1995	392115172.425824
1996	446639504.114119
1997	462908569.186987
1998	461703472.064787
1999	516021788.240724
2000	531418930.31634
2001	515057557.904867
2002	558836079.152012
2003	570709895.808104
2004	689230491.575624
2005	728000865.955545
2006	756313651.302717
2007	870717354.707136
2008	1027617076.90084
2009	1137011476.88779
2010	1286020916.73656
2011	1444588794.69335
2012	1495090702.57132
2013	1608187955.98293
2014	1790274085.74641
2015	1896857247.38952
2016	2041930998.47779
2017	2030625644.51308
2018	2138767730.63692
2019	2314203754.04338
2020	2103947070.45971
2021	2511439607.95888