Year	current US$
1990	110438649.598023
1991	108131053.144941
1992	90049775.1483306
1993	113239910.527325
1994	76542149.8095468
1995	95351471.1794282
1996	95355235.3754157
1997	82549616.0688718
1998	80900895.2061874
1999	108492918.338805
2000	93793841.0818634
2001	89808946.9697009
2002	98280110.0340221
2003	121557698.718209
2004	139360827.743157
2005	146393817.220244
2006	151653518.665119
2007	167233798.478089
2008	195364127.553913
2009	195381803.077643
2010	191962574.094049
2011	215697612.041448
2012	225533572.210731
2013	248428220.092518
2014	263688057.734261
2015	251856034.717249
2016	277437664.991777
2017	304437872.790338
2018	332830127.640476
2019	329416060.111813
2020	349010611.950005
2021	361364825.198689