Year	Number
1960	1403329
1961	1417871
1962	1431196
1963	1440400
1964	1446485
1965	1453837
1966	1462361
1967	1471845
1968	1482609
1969	1494077
1970	1506524
1971	1518550
1972	1530654
1973	1544422
1974	1560852
1975	1580335
1976	1603072
1977	1631076
1978	1662899
1979	1696819
1980	1733933
1981	1773071
1982	1813927
1983	1858767
1984	1906568
1985	1954602
1986	2000545
1987	2044561
1988	2089465
1989	2136521
1990	2186161
1991	2233915
1992	2282125
1993	2336750
1994	2397837
1995	2464267
1996	2532203
1997	2603767
1998	2690337
1999	2791477
2000	2899670
2001	3015148
2002	3136662
2003	3261630
2004	3389244
2005	3517704
2006	3642601
2007	3759181
2008	3867774
2009	3976390
2010	4088843
2011	4208243
2012	4339378
2013	4477145
2014	4622481
2015	4777370
2016	4940555
2017	5109904
2018	5280349
2019	5453886
2020	5638841
2021	5834625
2022	6032300
2023	6234579