Year	Total
1985	123670000000
1986	129530000000
1987	135810000000
1988	143370000000
1989	151430000000
1990	155650000000
1991	157960000000
1992	161400000000
1993	165380000000
1994	170140000000
1995	175220000000
1996	180130000000
1997	188980000000
1998	199470000000
1999	206900000000
2000	216830000000
2001	224250000000
2002	223500000000
2003	225950000000
2004	229220000000
2005	230740000000
2006	237990000000
2007	243180000000
2008	245370000000
2009	249900000000
2010	250960000000
2011	256300000000
2012	250670000000
2013	249560000000
2014	247420000000
2015	253040000000
2016	256890000000