Year	constant 2010 US$
1991	1078042550.5141
1992	1213183377.64511
1993	1332122970.8126
1994	1438705625.67164
1995	1506839003.64842
1996	1682760367.62852
1997	1697595950.97844
1998	1789266132.33831
1999	1773162737.11443
2000	1773162737.11443
2001	1806852829.12106
2002	1900809176.25207
2003	1974940734.12935
2004	2050571194.8922
2005	2156762290.67993
2006	2188501870.18242
2007	2614708870.91211
2008	2813924697.37977
2009	2747751963.71476
2010	2924148052.80265
2011	2964015826.733
2012	2996739716.08624
2013	3127206727.29685
2014	2949139401.39303
2015	2808201524.11277
2016	2623934345.14096
2017	2552635282.45439
2018	2599850285.04146