Year	Total
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	51590
1967	51590
1968	85980
1969	94580
1970	395500
1971	687900
1972	816900
1973	834700
1974	1694000
1975	2160000
1976	2930000
1977	2722000
1978	5100000
1979	6053000
1980	7102000
1981	7551000
1982	8807000
1983	9827000
1984	11540000
1985	13720000
1986	14470000
1987	16140000
1988	15360000
1989	15720000
1990	17390000
1991	18350000
1992	19200000
1993	21430000
1994	23140000
1995	25040000
1996	25980000
1997	27440000
1998	28580000
1999	27220000
2000	27690000
2001	27500000
2002	25370000
2003	20640000
2004	24290000
2005	26200000
2006	26090000
2007	22690000
2008	22200000
2009	24050000
2010	24780000
2011	8750000