Year	Total
1985	298090000000
1986	301070000000
1987	302110000000
1988	308820000000
1989	314580000000
1990	319740000000
1991	322880000000
1992	321040000000
1993	323100000000
1994	326560000000
1995	337420000000
1996	350870000000
1997	350670000000
1998	362700000000
1999	368150000000
2000	377070000000
2001	384780000000
2002	387250000000
2003	398210000000
2004	393930000000
2005	398360000000
2006	397280000000
2007	396830000000
2008	388920000000
2009	376750000000
2010	381770000000
2011	367420000000
2012	363580000000
2013	358380000000
2014	338170000000
2015	339100000000
2016	338580000000