Year	Number
1960	2211827
1961	2218360
1962	2214356
1963	2203620
1964	2194411
1965	2192548
1966	2200233
1967	2210866
1968	2216691
1969	2211693
1970	2199184
1971	2189672
1972	2187341
1973	2184096
1974	2182103
1975	2198014
1976	2231028
1977	2256072
1978	2277070
1979	2292845
1980	2297720
1981	2293417
1982	2273706
1983	2247075
1984	2214849
1985	2174962
1986	2130275
1987	2085981
1988	2042289
1989	1999790
1990	1966017
1991	1935183
1992	1897394
1993	1856407
1994	1811748
1995	1764175
1996	1718884
1997	1680384
1998	1647650
1999	1618604
2000	1598183
2001	1586852
2002	1577882
2003	1569511
2004	1564876
2005	1569442
2006	1578276
2007	1585988
2008	1596905
2009	1609916
2010	1619965
2011	1622976
2012	1617144
2013	1605842
2014	1591915
2015	1574493
2016	1560239
2017	1550619
2018	1540280
2019	1530089
2020	1516781
2021	1486054
2022	1446149
2023	1408974