Year	Total
1965	5561000
1966	6116000
1967	6513000
1968	7536000
1969	8278000
1970	9097000
1971	10156000
1972	10957000
1973	11866000
1974	10613000
1975	10713000
1976	11650000
1977	11141000
1978	12000000
1979	12504000
1980	12188000
1981	11046000
1982	10469000
1983	10109000
1984	9820000
1985	9835000
1986	10377000
1987	10670000
1988	10561000
1989	10381000
1990	10855000
1991	11694000
1992	11392000
1993	11483000
1994	11322000
1995	11320000
1996	11704000
1997	11921000
1998	12379000
1999	12152000
2000	11850000
2001	12889000
2002	13160000
2003	14238000
2004	13851000
2005	13990000
2006	14163000
2007	13426000
2008	13360000
2009	12846000
2010	13379000
2011	12666000
2012	12519000
2013	12735000
2014	12468000
2015	12455000
2016	12657000