Year	Total
1985	15431000000
1986	16034000000
1987	17677000000
1988	19352000000
1989	20453000000
1990	20898000000
1991	21514000000
1992	24686000000
1993	26000000000
1994	28316000000
1995	30437000000
1996	32569000000
1997	35111000000
1998	37976000000
1999	39227000000
2000	42958000000
2001	43838000000
2002	45428000000.00001
2003	47048000000
2004	48471000000
2005	49833000000
2006	51811000000.00001
2007	55107000000
2008	55831000000
2009	55306999999.99999
2010	58486000000.00001
2011	59277000000
2012	62965000000
2013	61368000000
2014	61295000000
2015	65413000000
2016	67391000000.00001