Year	Number
1960	54929
1961	56617
1962	58215
1963	59742
1964	61221
1965	62726
1966	64220
1967	65533
1968	66696
1969	67819
1970	68951
1971	70073
1972	71186
1973	72296
1974	73548
1975	74924
1976	76233
1977	77279
1978	78068
1979	78795
1980	79488
1981	80099
1982	80247
1983	79931
1984	79508
1985	79054
1986	78714
1987	78844
1988	79249
1989	79526
1990	79735
1991	80051
1992	80669
1993	81526
1994	82468
1995	83430
1996	84399
1997	85378
1998	86362
1999	87332
2000	88287
2001	89110
2002	89754
2003	90285
2004	90732
2005	91135
2006	91624
2007	92269
2008	93008
2009	93778
2010	94597
2011	95507
2012	96459
2013	97429
2014	98400
2015	99370
2016	100415
2017	101510
2018	102603
2019	103759
2020	105296
2021	107213
2022	109007
2023	110622