Year	Total
1980	2277880000
1981	2250600000
1982	2284700000
1983	2257420000
1984	2271060000
1985	2264240000
1986	2191402400
1987	2179672000
1988	2182400000
1989	2182400000
1990	2332440000
1991	2728000000
1992	2863172400
1993	2863172400
1994	2863172400
1995	2840939200
1996	2840939200
1997	2840939200
1998	3069000000
1999	3955600000
2000	3955600000
2001	4297418400
2002	4685203600
2003	4808782000
2004	4893486400
2005	4940408000
2006	5074080000
2007	5074080000
2008	5074080000
2009	5074080000
2010	5074080000
2011	5074080000
2012	5065759600
2013	5056348000
2014	5056348000
2015	5056348000
2016	5055256800