Year	Total
1965	2300000
1966	2719000
1967	3023000
1968	3993000
1969	4330000
1970	5053000
1971	5626000
1972	7080000
1973	7499000
1974	7655000
1975	8250000
1976	8697000
1977	9779000
1978	10979000
1979	11101000
1980	11582000
1981	11042000
1982	9997000
1983	11196000
1984	11648000
1985	11023000
1986	11496000
1987	12572000
1988	14214000
1989	16710000
1990	20055000
1991	21458000
1992	24176000
1993	27934000
1994	31177000
1995	33965000
1996	37444000
1997	37658000
1998	34460000
1999	36698000
2000	34784000
2001	34230000
2002	38110000
2003	42303000
2004	45778000
2005	45874000
2006	44182000
2007	45496000
2008	44390000
2009	45902000
2010	47749000
2011	49728000
2012	52294000
2013	54537000
2014	54974000
2015	57292000
2016	58958000