Year	Number
1960	58407
1961	60202
1962	61949
1963	63675
1964	65361
1965	67063
1966	68756
1967	70219
1968	71457
1969	72638
1970	73820
1971	74992
1972	76146
1973	77291
1974	78692
1975	80340
1976	81903
1977	83082
1978	83921
1979	84694
1980	85416
1981	86091
1982	86638
1983	87013
1984	87270
1985	87463
1986	87651
1987	87928
1988	88203
1989	88359
1990	88451
1991	88650
1992	89130
1993	89836
1994	90639
1995	91472
1996	92314
1997	93165
1998	94023
1999	94879
2000	95721
2001	96420
2002	96876
2003	97154
2004	97341
2005	97490
2006	97754
2007	98209
2008	98778
2009	99398
2010	100075
2011	100844
2012	101665
2013	102510
2014	103356
2015	104201
2016	105129
2017	106119
2018	107099
2019	108147
2020	109634
2021	111550
2022	113375
2023	115059