Year	Number
1960	80479
1961	82839
1962	85407
1963	88196
1964	91111
1965	93887
1966	96519
1967	99335
1968	102334
1969	105323
1970	108318
1971	111384
1972	114575
1973	117930
1974	121489
1975	125216
1976	129204
1977	133535
1978	138168
1979	143107
1980	148221
1981	153295
1982	158286
1983	163339
1984	168539
1985	173859
1986	179242
1987	184649
1988	190064
1989	195474
1990	200766
1991	205826
1992	210818
1993	215723
1994	220292
1995	224567
1996	228640
1997	232511
1998	236178
1999	240521
2000	246050
2001	252237
2002	258601
2003	262967
2004	264739
2005	266058
2006	267649
2007	269344
2008	271179
2009	273244
2010	275593
2011	278240
2012	281114
2013	284163
2014	287432
2015	290956
2016	294762
2017	298391
2018	302061
2019	306015
2020	310137
2021	314381
2022	318268
2023	321758