Year	current US$
1980	87100000
1981	93600000
1982	93700000
1983	96500000
1984	95200000
1985	85000000
1986	86200000
1987	94900000
1988	115800000
1989	140200000
1990	177720795.811518
1991	202570224.390244
1992	237300000
1993	256976040.145985
1994	281896971.527179
2006	1046484375
2007	1635687351.5625
2008	2076965007.8125
2009	1480031945.3125
2010	1693203242.1875
2011	2295433324.20216
2012	2146445205.92523
2013	2399557575.79702
2014	2754149267.8994
2015	2769184611.78032
2016	3198227889.69574
2017	3514841554.55904