Year	Number
1960	41700
1961	42889
1962	44042
1963	45176
1964	46322
1965	47500
1966	48699
1967	49911
1968	51134
1969	52365
1970	53600
1971	54695
1972	56029
1973	56892
1974	57937
1975	59292
1976	60504
1977	61786
1978	62150
1979	62686
1980	63261
1981	64035
1982	64413
1983	64335
1984	64717
1985	65244
1986	65652
1987	68499
1988	68755
1989	69167
1990	69507
1991	70439
1992	70763
1993	72253
1994	74205
1995	75304
1996	76417
1997	77319
1998	78846
1999	80410
2000	81131
2001	81202
2002	83723
2003	82781
2004	82475
2005	82858
2006	84600
2007	85033
2008	86956
2009	87298
2010	89770
2011	87441
2012	88303
2013	89949
2014	91359
2015	93419
2016	94677
2017	95843
2018	96762
2019	97625
2020	98462
2021	99258
2022	119878
2023	119773