Year	current US$
1990	11875247.0108083
1991	12553068.438935
1992	15807210.5215681
1993	14022023.5004614
1994	15082996.3843442
1995	16357241.1109408
1996	16872340.4975398
1997	19205076.5470996
1998	21741320.338238
1999	23076309.7596471
2000	23016397.9599114
2001	25422961.5996751
2002	27609283.9430768
2003	28997778.2738784
2004	30004913.1008305
2005	33038068.6534744
2006	36049970.2838039
2007	38114807.7264554
2008	47771175.8617737
2009	127592740.508385
2010	44296274.6582091
2011	52497960.9511153
2012	65868499.3496838
2013	46548557.7615412
2014	42761860.6930688
2015	44161479.4078375
2016	46325903.6557822
2017	44152167.565941
2018	48581644.9711245
2019	50973650.9701184
2020	43522116.483995
2021	44130966.3807846