Year	Number
1960	1346634
1961	1328310
1962	1305304
1963	1283079
1964	1260931
1965	1238793
1966	1220277
1967	1204427
1968	1187380
1969	1163957
1970	1133856
1971	1107131
1972	1085779
1973	1066924
1974	1050872
1975	1037047
1976	1023795
1977	1011156
1978	997525
1979	982919
1980	970637
1981	961035
1982	954451
1983	951231
1984	950965
1985	951552
1986	951592
1987	952288
1988	956464
1989	961115
1990	963215
1991	964871
1992	966900
1993	969453
1994	971432
1995	971951
1996	970112
1997	964907
1998	956201
1999	947030
2000	939626
2001	933922
2002	929264
2003	923528
2004	917309
2005	910716
2006	904026
2007	897874
2008	892875
2009	889750
2010	888017
2011	888353
2012	890214
2013	893235
2014	895839
2015	896336
2016	895127
2017	892334
2018	886366
2019	876679
2020	866000
2021	854904
2022	843021
2023	832797