Year	Total
1965	2164000
1966	2564000
1967	3050000
1968	3643000
1969	4369000
1970	5254000
1971	7366000
1972	7996000
1973	10197000
1974	9154000
1975	10610000
1976	13680000
1977	15102000
1978	17707000
1979	17744000
1980	18425000
1981	16149000
1982	15488000
1983	15843000
1984	15364000
1985	18744000
1986	20725000
1987	21537000
1988	24743000
1989	27553000
1990	28494000
1991	29565000
1992	30348000
1993	32529000
1994	34304000
1995	37081000
1996	37190000
1997	38671000
1998	39964000
1999	43025000
2000	44293000
2001	45428000
2002	45575000
2003	47412000
2004	49608000
2005	49222000
2006	49095000
2007	51147000
2008	45850000
2009	46092000
2010	47219000
2011	44540000
2012	44592000
2013	45094000
2014	46121000
2015	46478000
2016	46670000