Year	Number
1960	1270157
1961	1301869
1962	1314333
1963	1329824
1964	1344974
1965	1360801
1966	1379247
1967	1398895
1968	1418240
1969	1437651
1970	1451892
1971	1466249
1972	1485441
1973	1502500
1974	1516153
1975	1528840
1976	1542798
1977	1555778
1978	1567909
1979	1580443
1980	1594700
1981	1613445
1982	1634213
1983	1653987
1984	1668332
1985	1677555
1986	1685014
1987	1692191
1988	1701987
1989	1715091
1990	1731226
1991	1741212
1992	1750418
1993	1766829
1994	1784869
1995	1801908
1996	1817066
1997	1831771
1998	1846798
1999	1862798
2000	1875107
2001	1886127
2002	1898426
2003	1908695
2004	1917600
2005	1925046
2006	1931430
2007	1936842
2008	1941324
2009	1942573
2010	1940071
2011	1937042
2012	1932167
2013	1923626
2014	1913289
2015	1901051
2016	1885592
2017	1868257
2018	1851157
2019	1834801
2020	1819648
2021	1802756
2022	1808725
2023	1811354