Year	Number
1960	89755
1961	91546
1962	93501
1963	95855
1964	98579
1965	101740
1966	105357
1967	109159
1968	113132
1969	117284
1970	121620
1971	126126
1972	130805
1973	135669
1974	140696
1975	145892
1976	151269
1977	156814
1978	162508
1979	168317
1980	174212
1981	180177
1982	186195
1983	192256
1984	198346
1985	204434
1986	210532
1987	216621
1988	222643
1989	228575
1990	234091
1991	237420
1992	227444
1993	215789
1994	214518
1995	215312
1996	217217
1997	218409
1998	219437
1999	221403
2000	223660
2001	224924
2002	225184
2003	224456
2004	222755
2005	220607
2006	218509
2007	216247
2008	213775
2009	211353
2010	209107
2011	207124
2012	205526
2013	204247
2014	202857
2015	200882
2016	198388
2017	195236
2018	191177
2019	186517
2020	181742
2021	177288
2022	173260
2023	169573