Year	Total
1965	10655000
1966	10444000
1967	10075000
1968	9257800
1969	11234000
1970	11760000
1971	11676000
1972	10577000
1973	9948000
1974	9073800
1975	8499400
1976	7941800
1977	7467300
1978	7098600
1979	6677200
1980	6801100
1981	7256600
1982	7646500
1983	8204600
1984	9019300
1985	9521400
1986	16052000
1987	20361000
1988	19994000
1989	21362000
1990	23373000
1991	22578000
1992	23269000
1993	24032000
1994	24121000
1995	31016000
1996	33361000
1997	34838000
1998	40409000
1999	43706000
2000	36283000
2001	31812000
2002	30443000
2003	28494000
2004	27901000
2005	27713000
2006	27879000
2007	27991000
2008	31073000
2009	35320000
2010	41404000
2011	48207000
2012	49863000
2013	52880000
2014	52163000
2015	52963000
2016	48798000