Year	US Dollars
1990	1122932140006.72998
1991	1267337346378.47998
1992	1478241427213.59009
1993	1718847903528.38013
1994	1985021958679.67969
1995	2216330461450.91992
1996	2484964494519.19971
1997	2769081722695.90039
1998	3004072926524.57959
1999	3293743396759.44043
2000	3658894883430.74023
2001	4045318783246.1001
2002	4501333547656.41016
2003	5072293772636.92871
2004	5759125834931.94922
2005	6592486645518.21973
2006	7699260793574.19141
2007	9066414831846.43945
2008	10176666833372.5
2009	11129931995624.99805
2010	12431610618329.80078
2011	13828218549059.19922
2012	15296329736060.79883
2013	16652030124084.99805
2014	18359704697528.60156
2015	19739422919355.39844
2016	21341135255566.39844
2017	23241463364843.89453