Year	current US$
1990	2077077642.98229
1991	2407243011.96843
1992	2706515943.87934
1993	2850116496.70379
1994	3021871003.76046
1995	3131265137.15327
1996	3464400857.82031
1997	3643501030.79329
1998	4004169155.20777
1999	4251721318.17744
2000	4634091866.67054
2001	4931084208.29117
2002	5486589436.01502
2003	5985099148.48805
2004	6616304216.68104
2005	7335614973.85358
2006	8226259785.48069
2007	9132616726.79548
2008	10459203940.677
2009	11227332884.8457
2010	12749611508.0685
2011	13833510741.7418
2012	15301066842.5532
2013	16266457237.9564
2014	18199718207.9861
2015	19653249629.2818
2016	20154640909.1243
2017	20394935057.8852
2018	20422313336.5453
2019	21359184318.7978
2020	20997738143.0124
2021	22930848555.8836