Year	Number
1960	128434
1961	130988
1962	134182
1963	137639
1964	140786
1965	143218
1966	144647
1967	145214
1968	145394
1969	145908
1970	147304
1971	149846
1972	153340
1973	157428
1974	161597
1975	165463
1976	168866
1977	171872
1978	174615
1979	177352
1980	180266
1981	183583
1982	187282
1983	190996
1984	194219
1985	196656
1986	198222
1987	199022
1988	199284
1989	199375
1990	199538
1991	199824
1992	200323
1993	200866
1994	201201
1995	201225
1996	200931
1997	200517
1998	200046
1999	199654
2000	199399
2001	200141
2002	200780
2003	201315
2004	201489
2005	201887
2006	202572
2007	203629
2008	204819
2009	206044
2010	207381
2011	208400
2012	208877
2013	209086
2014	208885
2015	208260
2016	207615
2017	206909
2018	205934
2019	204730
2020	203412
2021	201929
2022	200702
2023	199897