Year	Total
1985	29375000000
1986	31653000000
1987	33680000000
1988	35473000000
1989	37021000000
1990	38246000000
1991	40124000000
1992	36613000000
1993	41691000000
1994	45023999999.99999
1995	47483000000.00001
1996	48371000000
1997	49906000000.00001
1998	50283000000
1999	47775000000
2000	46780000000
2001	48208000000
2002	50283000000
2003	52113000000
2004	53839000000
2005	55897000000
2006	59703999999.99999
2007	61081000000
2008	61927000000
2009	63788000000
2010	66962000000
2011	68022999999.99999
2012	69407000000
2013	71612000000
2014	74527000000
2015	77043000000
2016	78536999999.99998