Year	Total
1985	27740000000
1986	28237000000
1987	30272000000
1988	33394000000
1989	34455999999.99999
1990	35003000000
1991	35813000000
1992	37410000000
1993	38396000000
1994	40623000000.00001
1995	41551000000
1996	42556999999.99999
1997	43505000000
1998	46328999999.99999
1999	49620000000
2000	53843000000
2001	53703999999.99999
2002	54608000000.00001
2003	58478000000
2004	59346000000
2005	60020000000
2006	60788999999.99999
2007	63496000000
2008	63748999999.99999
2009	61365000000
2010	57391999999.99999
2011	59436000000.00001
2012	60958999999.99999
2013	57152000000
2014	50474000000
2015	51873999999.99999
2016	52471000000