Year	Total
1965	3564000
1966	4247000
1967	4992000
1968	6029000
1969	6713000
1970	7097000
1971	8429000
1972	9549000
1973	11683000
1974	11335000
1975	12481000
1976	14105000
1977	15938000
1978	16916000
1979	15061000
1980	15396000
1981	15156000
1982	16225000
1983	17043000
1984	16968000
1985	17785000
1986	19213000
1987	21643000
1988	23064000
1989	21612000
1990	22929000
1991	22350000
1992	23619000
1993	27083000
1994	25846000
1995	28987000
1996	30292000
1997	29829000
1998	29796000
1999	29603000
2000	30953000
2001	28844000
2002	30865000
2003	30452000
2004	31104000
2005	30720000
2006	32059000
2007	32599000
2008	32132000
2009	32610000
2010	31793000
2011	31105000
2012	31604000
2013	33450000
2014	34325000
2015	38893000
2016	41172000