Year	Number
1960	49142
1961	50611
1962	52082
1963	53425
1964	54655
1965	55847
1966	56916
1967	57873
1968	58763
1969	59661
1970	60631
1971	61666
1972	62767
1973	63994
1974	65271
1975	66464
1976	67694
1977	69015
1978	70367
1979	71763
1980	73217
1981	74658
1982	75991
1983	77121
1984	78303
1985	79964
1986	82112
1987	84572
1988	86972
1989	89127
1990	91300
1991	93409
1992	95324
1993	97756
1994	79015
1995	61444
1996	71946
1997	81480
1998	87801
1999	97575
2000	108608
2001	121119
2002	133124
2003	140855
2004	146174
2005	152518
2006	159619
2007	167425
2008	175858
2009	184675
2010	193695
2011	203069
2012	207189
2013	206315
2014	207142
2015	210065
2016	214811
2017	221075
2018	228532
2019	236933
2020	245917
2021	254593
2022	264386
2023	276114