Year	Total
1960	9182000
1961	9012000
1962	9026000
1963	9010000
1964	9832000
1965	10150000
1966	11260000
1967	11520000
1968	11710000
1969	12950000
1970	13600000
1971	13970000
1972	15620000
1973	16740000
1974	18110000
1975	17410000
1976	18290000
1977	18930000
1978	20230000
1979	20990000
1980	21590000
1981	22870000
1982	22170000
1983	22870000
1984	24600000
1985	26110000
1986	26710000
1987	27190000
1988	26430000
1989	25050000
1990	25510000
1991	26510000
1992	27200000
1993	27820000
1994	28360000
1995	28880000
1996	30580000
1997	30150000
1998	28540000
1999	29730000
2000	30830000
2001	28660000
2002	30140000
2003	29020000
2004	29310000
2005	31270000
2006	30340000
2007	31610000
2008	32180000
2009	31700000
2010	30220000
2011	32360000