Year	Number
1960	822625
1961	820872
1962	828191
1963	836770
1964	840109
1965	838816
1966	840227
1967	845703
1968	851393
1969	857437
1970	864072
1971	873816
1972	888704
1973	905315
1974	921972
1975	938170
1976	953259
1977	968079
1978	985446
1979	1001985
1980	1015159
1981	1028316
1982	1040100
1983	1050424
1984	1060225
1985	1066076
1986	1071004
1987	1074530
1988	1072287
1989	1072687
1990	1082938
1991	1100228
1992	1118333
1993	1134320
1994	1149308
1995	1167091
1996	1188761
1997	1212061
1998	1234853
1999	1257812
2000	1283154
2001	1311481
2002	1339470
2003	1365111
2004	1395547
2005	1436155
2006	1487167
2007	1533446
2008	1553625
2009	1549960
2010	1537649
2011	1525308
2012	1516471
2013	1513156
2014	1516087
2015	1526323
2016	1541523
2017	1557143
2018	1575778
2019	1597101
2020	1613338
2021	1628990
2022	1660711
2023	1706457