Year	Number
1960	577933
1961	583107
1962	590399
1963	595802
1964	590481
1965	577638
1966	570375
1967	573380
1968	583475
1969	587880
1970	591663
1971	594501
1972	595950
1973	603203
1974	623576
1975	659635
1976	701016
1977	746588
1978	794328
1979	821598
1980	831462
1981	844957
1982	858630
1983	872394
1984	886210
1985	900088
1986	914122
1987	928408
1988	943080
1989	958239
1990	973551
1991	993856
1992	1022904
1993	1056761
1994	1089617
1995	1117222
1996	1140604
1997	1162443
1998	1184071
1999	1206474
2000	1230849
2001	1257380
2002	1285678
2003	1315653
2004	1347009
2005	1379713
2006	1414091
2007	1450572
2008	1488431
2009	1527196
2010	1567220
2011	1609017
2012	1652717
2013	1697753
2014	1743309
2015	1788919
2016	1834552
2017	1879826
2018	1924955
2019	1970457
2020	2015828
2021	2060721
2022	2105566
2023	2150842