Year	constant 2011 international $
1990	62925566322.8371
1991	62485087383.7082
1992	48363457388.3884
1993	37191498949.9998
1994	29864773649.7816
1995	26340730090.5154
1996	26683159634.3111
1997	28230783032.8945
1998	31053861414.7196
1999	33351847340.0408
2000	37053902145.8274
2001	40722238458.2643
2002	44565976479.0869
2003	49115405060.9364
2004	53660447065.8721
2005	68664733399.9362
2006	92330864172.6502
2007	115841271464.92
2008	128110527093.155
2009	140113846495.983
2010	146823664207.939
2011	144514131462.76
2012	147697689658.037
2013	156327183091.947
2014	160700106785.222
2015	162388664736.025
2016	157412751213.719
2017	156968829630.03
2018	159186600669.391