Year	Number
1960	773570
1961	797283
1962	820237
1963	842388
1964	864475
1965	886495
1966	907843
1967	928207
1968	947102
1969	963680
1970	975058
1971	980387
1972	978991
1973	972501
1974	964733
1975	955873
1976	946270
1977	936186
1978	925767
1979	915053
1980	904957
1981	894676
1982	884125
1983	875214
1984	868210
1985	862890
1986	858419
1987	853971
1988	850276
1989	847994
1990	845979
1991	845158
1992	847134
1993	850463
1994	854505
1995	858313
1996	860876
1997	862773
1998	863813
1999	863861
2000	862859
2001	861003
2002	858699
2003	855380
2004	851612
2005	847711
2006	842622
2007	836803
2008	831166
2009	825707
2010	818084
2011	808459
2012	800225
2013	793769
2014	788545
2015	783516
2016	778387
2017	774129
2018	771946
2019	769251
2020	765204
2021	761847
2022	758123
2023	753907