Year	Total
1970	6750
1971	13050
1972	13950
1973	16875
1974	150980
1975	162000
1976	225000
1977	207000
1978	243000
1979	243000
1980	315000
1981	378000
1982	405000
1983	540000
1984	576000
1985	828000
1986	963000
1987	1071000
1988	936000
1989	981000
1990	765000
1991	774000
1992	783000
1993	990000
1994	1287000
1995	1476000
1996	1440000
1997	1359000
1998	1584000
1999	1548000
2000	3060000
2001	6300000
2002	7560000
2003	8640000
2004	9180000
2005	10980000
2006	11340000
2007	12168000
2008	11160000
2009	10399000
2010	11183000
2011	11496000
2012	11461000
2013	11781000
2014	15154000
2015	17603000
2016	16971000