Year	Number
1960	91614
1961	92761
1962	93823
1963	94887
1964	95948
1965	97024
1966	98126
1967	99257
1968	100400
1969	101605
1970	103090
1971	104781
1972	106457
1973	108114
1974	109740
1975	111497
1976	113421
1977	115385
1978	117397
1979	119463
1980	121633
1981	123909
1982	126194
1983	128440
1984	130625
1985	132751
1986	134810
1987	136780
1988	138660
1989	140457
1990	142301
1991	144268
1992	146420
1993	148595
1994	150561
1995	152348
1996	153969
1997	155454
1998	156855
1999	158256
2000	159500
2001	160594
2002	161799
2003	163047
2004	164239
2005	165386
2006	166470
2007	167518
2008	168576
2009	169688
2010	170935
2011	172145
2012	173124
2013	173978
2014	174804
2015	175623
2016	176413
2017	177163
2018	177888
2019	178583
2020	179237
2021	179651
2022	179857
2023	180251