Year	Total
1960	21310
1961	22540
1962	22890
1963	23570
1964	25360
1965	28290
1966	29580
1967	31220
1968	35270
1969	38710
1970	47700
1971	53850
1972	62430
1973	67990
1974	67500
1975	74960
1976	75250
1977	82250
1978	81620
1979	86520
1980	85410
1981	97200
1982	98610
1983	107400
1984	118400
1985	128100
1986	136500
1987	148900
1988	136700
1989	144700
1990	157500
1991	167000
1992	172100
1993	174900
1994	173500
1995	186900
1996	189800
1997	201000
1998	216500
1999	213500
2000	233600
2001	253800
2002	263500
2003	263600
2004	269300
2005	280100
2006	281500
2007	298600
2008	301000
2009	310700
2010	324000