Year	Total
1985	3026000000
1986	3305000000
1987	3495000000
1988	3495000000
1989	3436000000
1990	3577000000
1991	3720000000
1992	3976000000
1993	3817000000
1994	4069000000
1995	4307000000
1996	4541000000
1997	4988000000
1998	5169000000
1999	5247000000
2000	5459000000
2001	5644000000
2002	5644000000
2003	6437000000
2004	6430000000
2005	7058000000
2006	6901000000
2007	7683000000
2008	7683000000
2009	7735000000
2010	8485000000
2011	8772000000
2012	9132000000
2013	9505000000
2014	9891000000
2015	9693800000
2016	8905200000