Year	current US$
1990	33808101.1838317
1991	32791688.9833405
1992	41259498.6495167
1993	44730254.9664719
1994	50667152.9027485
1995	56715293.9454115
1996	65101766.6367337
1997	71191232.0280417
1998	104426814.223033
1999	116801629.398829
2000	106543648.62088
2001	120516482.087009
2002	149735017.696074
2003	150031980.955999
2004	147377067.834278
2005	163794372.598203
2006	208697448.568349
2007	234869620.015943
2008	232414821.529831
2009	276450950.937206
2010	319790522.636584
2011	350483548.021633
2012	453933398.506263
2013	505245787.65941
2014	508091727.617664
2015	548715073.80252
2016	577098666.376311
2017	636464757.445923
2018	731858980.57016
2019	817209609.687154
2020	851487207.643824
2021	959209696.759534