Year	Number
1960	650013
1961	650013
1962	650013
1963	650013
1964	650013
1965	755000
1966	755000
1967	755000
1968	755000
1969	755000
1970	916000
1971	916000
1972	916000
1973	916000
1974	916000
1975	1156000
1976	1229000
1977	1310000
1978	1398000
1979	1508000
1980	1632000
1981	1788610
1982	1936620
1983	2071817
1984	2152959
1985	2297773
1986	2532680
1987	2668589
1988	2866024
1989	3080333
1990	3315022
1991	3434788
1992	3458126
1993	3593851
1994	3775355
1995	4002180
1996	4258639
1997	4645065
1998	5075417
1999	5492838
2000	4961743
2001	4924458
2002	4917000
2003	4910000
2004	4903000
2005	4896000
2006	4889000
2007	4882000
2008	4875000
2009	4868000
2010	4861000
2011	4854000
2012	4847000
2013	3875582
2014	3647770
2015	4131055
2016	4522850
2017	4810074
2018	3345440
2019	2024730
2020	2098802
2021	1472191
2022	1309590