Year	Total
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	228700
1978	280700
1979	579700
1980	603800
1981	1261000
1982	1442000
1983	1524000
1984	1622000
1985	1639000
1986	1639000
1987	1689000
1988	1681000
1989	1641000
1990	1652000
1991	1678000
1992	1656000
1993	1713000
1994	1670000
1995	1652000
1996	1675000
1997	1797000
1998	1879000
1999	1975000
2000	1933000
2001	1958000
2002	1917000
2003	1955000
2004	1953000
2005	2001000
2006	1970000
2007	2014000
2008	1974000
2009	2023000
2010	1960000
2011	1994000