Year	Total
1965	3702000
1966	4226000
1967	5316000
1968	6300000
1969	7736000
1970	8986000
1971	9889000
1972	10282000
1973	10849000
1974	11284000
1975	11965000
1976	12431000
1977	12927000
1978	13315000
1979	13726000
1980	13972000
1981	12457000
1982	12064000
1983	11634000
1984	11167000
1985	10362000
1986	10921000
1987	10491000
1988	11130000
1989	10845000
1990	6788000
1991	4357000
1992	3926000
1993	4538000
1994	4458000
1995	4865000
1996	4293000
1997	4247000
1998	4434000
1999	4116000
2000	4110000
2001	4223000
2002	4218000
2003	4424000
2004	4298000
2005	4832000
2006	4972000
2007	4839000
2008	4773000
2009	4292000
2010	3885000
2011	3782000
2012	3903000
2013	3618000
2014	3863000
2015	4376000
2016	4516500