Year	Total
1985	272000000000
1986	272700000000
1987	281500000000
1988	297200000000
1989	295300000000
1990	298500000000
1991	279000000000
1992	252600000000
1993	229910000000
1994	202920000000
1995	194020000000
1996	181710000000
1997	176000000000
1998	171900000000
1999	171000000000
2000	169000000000
2001	171400000000
2002	173730000000
2003	179500000000
2004	182200000000
2005	185000000000
2006	192120000000
2007	195130000000
2008	191690000000
2009	172900000000
2010	187900000000
2011	194950000000
2012	198880000000
2013	194380000000
2014	182810000000
2015	163680000000
2016	163710000000