Year	current US$
1990	38776316.7699862
1991	40861518.6940844
1992	41929295.7055154
1993	37719243.2162412
1994	30165992.7686884
1995	40358052.8344707
1996	50457848.4690576
1997	54138448.5422549
1998	66422301.505798
1999	70293989.7293865
2000	80743008.9722697
2001	82285005.4829177
2002	55621622.7404125
2003	67871612.1024298
2004	77659773.8468333
2005	100277519.936243
2006	117223715.759435
2007	106875982.203516
2008	117012548.586084
2009	133668592.819664
2010	154894077.040617
2011	160476725.826898
2012	163428462.433181
2013	172294305.179779
2014	174751230.533068
2015	196814149.971485
2016	197513548.559183
2017	202426466.45114
2018	254270050.25664
2019	296054974.168002
2020	299122688.818058
2021	325162364.845418