Year	current US$
1990	80460857.2977214
1991	108878654.827498
1992	122304942.425353
1993	119888300.928945
1994	136772025.465801
1995	160973597.101128
1996	171906865.446632
1997	192713009.489862
1998	213304607.412949
1999	249579165.554337
2000	278981017.207635
2001	311867933.516625
2002	324257942.562604
2003	392940925.883163
2004	433085597.641794
2005	491150472.195474
2006	537561453.055523
2007	599278095.81883
2008	650010036.610804
2009	733796355.053227
2010	726744717.890517
2011	684561505.914402
2012	652781726.942405
2013	899615491.302713
2014	923588873.603799
2015	471171703.453718
2016	389640377.675012
2017	374545107.700314
2018	380817418.113123