Year	Total
1965	9555800
1966	9371900
1967	9542200
1968	10408000
1969	10273000
1970	10741000
1971	10812000
1972	11807000
1973	12907000
1974	12893000
1975	13800000
1976	13587000
1977	15283000
1978	15896000
1979	17021000
1980	20751000
1981	22017000
1982	21702000
1983	21206000
1984	19897000
1985	20427000
1986	21332000
1987	20199000
1988	20893000
1989	20437000
1990	20634000
1991	19476000
1992	23446000
1993	21001000
1994	23653000
1995	22614000
1996	18153000
1997	19665000
1998	22110000
1999	23807000
2000	23897000
2001	27014000
2002	28170000
2003	24068000
2004	26034000
2005	28271000
2006	31494000
2007	29672000
2008	33785000
2009	34196000
2010	34112000
2011	34565000
2012	37173000
2013	36715000
2014	33572000
2015	30239000
2016	28706000