Year	current US$
1990	7272177947.33945
1991	7544382024.60117
1992	6755732110.82427
1993	4393588104.7996
1994	7395210191.17426
1995	11671981477.4675
1996	13917599787.1174
1997	18668259314.4301
1998	16771964951.7242
1999	19667663708.6475
2000	28058830641.3359
2001	24536157123.467
2002	16922266096.6921
2003	14329177700.6781
2004	25063568272.9157
2005	37727125773.5169
2006	49549944732.5673
2007	61349471089.924
2008	98861835038.5517
2009	65509529480.6711
2010	116297730239.611
2011	85500740715.4384
2012	86910153953.6815
2013	60163512678.5973
2014	34452702136.6369