Year	Number
1960	50124
1961	50660
1962	51739
1963	53127
1964	54681
1965	56464
1966	58509
1967	60780
1968	63275
1969	65990
1970	68615
1971	70150
1972	70340
1973	70127
1974	69999
1975	69565
1976	68791
1977	68070
1978	67474
1979	67043
1980	67124
1981	68093
1982	69536
1983	70951
1984	72288
1985	73542
1986	74742
1987	75916
1988	77076
1989	78356
1990	79923
1991	81988
1992	84676
1993	87836
1994	91317
1995	95020
1996	98926
1997	103005
1998	107196
1999	111475
2000	115976
2001	120677
2002	125392
2003	130116
2004	134845
2005	139585
2006	144335
2007	149077
2008	153767
2009	158347
2010	162714
2011	166909
2012	171056
2013	175138
2014	179118
2015	182929
2016	186487
2017	189828
2018	192996
2019	196067
2020	199087
2021	202012
2022	204823
2023	207570