Year	Number
1960	76437
1961	77565
1962	78782
1963	80084
1964	81655
1965	83491
1966	85409
1967	87385
1968	89333
1969	90301
1970	89742
1971	88246
1972	86224
1973	83959
1974	81652
1975	79424
1976	77244
1977	75798
1978	75464
1979	76205
1980	78465
1981	82241
1982	87203
1983	93765
1984	101148
1985	107751
1986	113363
1987	118089
1988	122331
1989	126442
1990	130559
1991	134764
1992	139136
1993	143730
1994	148302
1995	152909
1996	157878
1997	163219
1998	168932
1999	175164
2000	182446
2001	190853
2002	200068
2003	210034
2004	220679
2005	231900
2006	243586
2007	255641
2008	268006
2009	280637
2010	293478
2011	306421
2012	319377
2013	332276
2014	344956
2015	357273
2016	369116
2017	380735
2018	392622
2019	405227
2020	416865
2021	428776
2022	442730
2023	457525