Year	Number
1960	96519
1961	99884
1962	103513
1963	107363
1964	111394
1965	115354
1966	119198
1967	123055
1968	126904
1969	130873
1970	135033
1971	139342
1972	143795
1973	148349
1974	152949
1975	157598
1976	162430
1977	167545
1978	172953
1979	178484
1980	183914
1981	189243
1982	194458
1983	199607
1984	204786
1985	209791
1986	213856
1987	217089
1988	219923
1989	222386
1990	224896
1991	226669
1992	227978
1993	229710
1994	231508
1995	233458
1996	236470
1997	240790
1998	245602
1999	250432
2000	255005
2001	259228
2002	263185
2003	266958
2004	270553
2005	274027
2006	277371
2007	280349
2008	282976
2009	285328
2010	287366
2011	289153
2012	290632
2013	291796
2014	292760
2015	293727
2016	294697
2017	295492
2018	296116
2019	296606
2020	297812
2021	299849
2022	302282
2023	305106