Year	Total
1965	47775
1966	47775
1967	47775
1968	191620
1969	429970
1970	859950
1971	3296500
1972	4455200
1973	4347500
1974	3869800
1975	4681900
1976	8000300
1977	8742800
1978	10319000
1979	13473000
1980	13222000
1981	12374000
1982	14524000
1983	18393000
1984	21366000
1985	21260000
1986	23887000
1987	23601000
1988	25724000
1989	27973000
1990	29550000
1991	30770000
1992	31264000
1993	30577000
1994	31114000
1995	33323000
1996	33794000
1997	33498000
1998	34023000
1999	32413000
2000	33501000
2001	32530000
2002	34175000
2003	35389000
2004	36277000
2005	34625000
2006	32683000
2007	33844000
2008	34024000
2009	32204000
2010	32589000
2011	29370000
2012	29783000
2013	28532000
2014	29677000
2015	32261000
2016	32651000