Year	Number
1960	46109
1961	47227
1962	48371
1963	49646
1964	51047
1965	52523
1966	54078
1967	55700
1968	57355
1969	58959
1970	60233
1971	61189
1972	62039
1973	62809
1974	63534
1975	64487
1976	65701
1977	66938
1978	68192
1979	69507
1980	71040
1981	72805
1982	74648
1983	76501
1984	78376
1985	80278
1986	82197
1987	84143
1988	86129
1989	88148
1990	90169
1991	92062
1992	93889
1993	95794
1994	97891
1995	100445
1996	103579
1997	107211
1998	111102
1999	115020
2000	118866
2001	122772
2002	126827
2003	130958
2004	135162
2005	139428
2006	143749
2007	148119
2008	152520
2009	156923
2010	160877
2011	164408
2012	167988
2013	171620
2014	175274
2015	178905
2016	182514
2017	186106
2018	189707
2019	193151
2020	196111
2021	198800
2022	201525
2023	204364