Year	Total
1960	9842
1961	9949
1962	9313
1963	9998
1964	9458
1965	9850
1966	10490
1967	9779
1968	10050
1969	10370
1970	9685
1971	10450
1972	11580
1973	11350
1974	13140
1975	13360
1976	12620
1977	14450
1978	14540
1979	15660
1980	15770
1981	17700
1982	19650
1983	21940
1984	25070
1985	26470
1986	28320
1987	27900
1988	30260
1989	34550
1990	34580
1991	34340
1992	33710
1993	32910
1994	32250
1995	31510
1996	32700
1997	31700
1998	32330
1999	30660
2000	31680
2001	33500
2002	31800
2003	32990
2004	32590
2005	30130
2006	31310
2007	30250
2008	30440
2009	29720
2010	33900