Year	Total
1965	24535000
1966	23929000
1967	25747000
1968	30323000
1969	32411000
1970	43113000
1971	45032000
1972	54723000
1973	67548000
1974	69416000
1975	65932000
1976	76126000
1977	84937000
1978	82105000
1979	79545000
1980	79035000
1981	79962000
1982	66584000
1983	70684000
1984	74892000
1985	66340000
1986	70370000
1987	69824000
1988	67290000
1989	71630000
1990	74434000
1991	81006000
1992	76730000
1993	76851000
1994	76940000
1995	76455000
1996	76726000
1997	75711000
1998	74201000
1999	68604000
2000	71810000
2001	68175000
2002	63329000
2003	57647000
2004	55550000
2005	53715000
2006	50226000
2007	47835000
2008	49427000
2009	48407000
2010	48623000
2011	46307000
2012	44624000
2013	42700000
2014	41222000
2015	40734000
2016	42985000