Year	Number
1960	56634
1961	56949
1962	57429
1963	57994
1964	58584
1965	59199
1966	59854
1967	60527
1968	61174
1969	61763
1970	62325
1971	62924
1972	63563
1973	64184
1974	64762
1975	65266
1976	65641
1977	65883
1978	66069
1979	66241
1980	66394
1981	66702
1982	67238
1983	67832
1984	68442
1985	69058
1986	69723
1987	70488
1988	71285
1989	72045
1990	72740
1991	73228
1992	73466
1993	73625
1994	73734
1995	73789
1996	73929
1997	74189
1998	74456
1999	74693
2000	74886
2001	75196
2002	75678
2003	76193
2004	76729
2005	77271
2006	77824
2007	78402
2008	78982
2009	79568
2010	80148
2011	80566
2012	80938
2013	81480
2014	81996
2015	82592
2016	83329
2017	84025
2018	84906
2019	85807
2020	86526
2021	87239
2022	87914
2023	88549