Year	Number
1960	1597877
1961	1633138
1962	1666277
1963	1696621
1964	1725110
1965	1751477
1966	1774923
1967	1796571
1968	1817094
1969	1835872
1970	1851623
1971	1863748
1972	1873029
1973	1880545
1974	1885781
1975	1888859
1976	1890325
1977	1890541
1978	1890395
1979	1889459
1980	1887958
1981	1887139
1982	1887060
1983	1887513
1984	1889626
1985	1894304
1986	1901869
1987	1912145
1988	1924682
1989	1939521
1990	1956227
1991	1974003
1992	1990469
1993	2004300
1994	2016384
1995	2025786
1996	2031699
1997	2033969
1998	2031992
1999	2025128
2000	2013406
2001	1998022
2002	1979782
2003	1957648
2004	1930963
2005	1901411
2006	1871316
2007	1844245
2008	1821843
2009	1802899
2010	1787215
2011	1774185
2012	1763320
2013	1755165
2014	1750432
2015	1748208
2016	1747210
2017	1747735
2018	1751029
2019	1757422
2020	1762323
2021	1764768
2022	1761481
2023	1750017