Year	Total
1980	488994000
1981	470580000
1982	467170000
1983	454212000
1984	613800000
1985	613800000
1986	613800000
1987	613800000
1988	613800000
1989	613800000
1990	408245200
1991	408245200
1992	425704400
1993	425704400
1994	477400000
1995	504680000
1996	504680000
1997	1705000000
1998	1839354000
1999	1787249200
2000	2300658800
2001	2296430400
2002	3764094400
2003	3684982400
2004	3664386000
2005	3806924000
2006	3742270400
2007	3726857200
2008	3660021200
2009	3533714800
2010	3366897600
2011	3259960000
2012	3441235600
2013	3418593200
2014	3506162000
2015	3443281600
2016	3443281600