Year	Number
1960	779262
1961	779262
1962	779262
1963	779262
1964	779262
1965	1049970
1966	1049970
1967	1049970
1968	1049970
1969	1049970
1970	1343541
1971	1343540
1972	1343540
1973	1343540
1974	1343540
1975	1849960
1976	1941000
1977	2050000
1978	2178000
1979	2317000
1980	2441993
1981	2587107
1982	2722107
1983	2818084
1984	2924966
1985	3032418
1986	3227160
1987	3367192
1988	3525140
1989	3711641
1990	3912629
1991	4096071
1992	4264342
1993	4395695
1994	4543468
1995	4682086
1996	4623685
1997	4768235
1998	4856502
1999	5008640
2000	5036422
2001	5131694
2002	4931600
2003	4875000
2004	4801000
2005	4794583
2006	4727800
2007	4847263
2008	4734517
2009	4636079
2010	4639780
2011	4634252
2012	4634782
2013	4586500
2014	4532475
2015	4488711
2016	4371055
2017	4281818
2018	4106864
2019	3930410
2020	3635172
2021	3305360
2022	2952930