Year	Total
1965	8626000
1966	8972000
1967	9832000
1968	9522000
1969	9774000
1970	9870000
1971	9535000
1972	8873000
1973	9003000
1974	9804000
1975	9830000
1976	9747000
1977	9585000
1978	9750000
1979	10700000
1980	12554000
1981	12866000
1982	14385000
1983	13464000
1984	15270000
1985	15076000
1986	14819000
1987	14710000
1988	13788000
1989	14386000
1990	14081000
1991	13824000
1992	12234000
1993	10648000
1994	11361000
1995	12277000
1996	11239000
1997	11334000
1998	11780000
1999	11767000
2000	12550000
2001	13351000
2002	13723000
2003	14860000
2004	16585000
2005	16461000
2006	16669000
2007	16327000
2008	15797000
2009	12372000
2010	13660000
2011	15354000
2012	15723000
2013	13547000
2014	13067000
2015	12301000
2016	10870000