Year	Total
1971	14100
1972	16510
1973	25970
1974	38010
1975	45230
1976	45570
1977	30270
1978	21320
1979	38180
1980	56660
1981	59590
1982	55550
1983	67500
1984	88130
1985	346400
1986	1018000
1987	1593000
1988	1714000
1989	2090000
1990	2335000
1991	2521000
1992	2332000
1993	2699000
1994	3129000
1995	3619000
1996	3850000
1997	4369000
1998	4371000
1999	4464000
2000	4599000
2001	3897000
2002	4145000
2003	4452000
2004	4465000
2005	4399000
2006	4625000
2007	4620000
2008	4769000
2009	4726000
2010	4649000