Year	current US$
1990	392489031.306204
1991	458186998.021129
1992	470867330.36705
1993	503110203.196556
1994	548259596.728007
1995	595892764.95745
1996	668845045.006247
1997	696515146.841794
1998	764027658.815404
1999	778736699.350552
2000	824135539.85489
2001	868067994.162951
2002	892162779.9594
2003	932551764.648148
2004	1022814540.46807
2005	1331294637.89749
2006	1476577303.087
2007	1637906541.89418
2008	1751967613.52043
2009	1676380874.03703
2010	1745844844.43706
2011	1697831737.16058
2012	1461224344.92151
2013	992389376.394493
2014	895978863.174626
2015	878709150.875296
2016	945910345.306736
2017	1097817509.07171
2018	1073105819.25265
2019	1048426015.81918
2020	1046194403.63737
2021	995829807.101469