Year	current US$
1990	467633429.6622346
1991	448725650.6110217
1992	400878530.21026736
1993	370028607.5106163
1994	413150885.9989262
1995	564723559.6543659
1996	553535410.6708798
1997	542773772.4287716
1998	558407784.194584
1999	672432822.4318123
2000	779113416.25599
2001	616966475.3748432
2002	675306280.7379884
2003	1013166116.5328666
2004	1296529854.8928826
2005	1339258810.7010424
2006	1667538561.1600175
2007	2415310046.3417797
2008	1682427311.9381576
2009	1340540623.432565
2010	1891549544.846724
2011	2079691259.7886899
2012	1715324020.2608492
2013	1596111822.5852778
2014	1976646974.3416412
2015	1578920444.1774387
2016	1680830644.3258653
2017	1927265624.1258066