Year	Number
1960	491832
1961	507199
1962	522763
1963	537505
1964	551744
1965	566862
1966	582773
1967	599145
1968	615524
1969	631612
1970	647882
1971	664953
1972	682949
1973	701995
1974	722097
1975	743040
1976	764423
1977	785899
1978	807554
1979	828588
1980	849102
1981	870173
1982	891797
1983	914105
1984	937394
1985	961865
1986	987499
1987	1013973
1988	1040901
1989	1065007
1990	1085652
1991	1105380
1992	1124026
1993	1141380
1994	1157432
1995	1172301
1996	1186139
1997	1199090
1998	1211405
1999	1223662
2000	1234617
2001	1244391
2002	1254668
2003	1265190
2004	1275713
2005	1286180
2006	1296962
2007	1308854
2008	1322575
2009	1338545
2010	1356147
2011	1377389
2012	1402736
2013	1430076
2014	1459613
2015	1491107
2016	1523921
2017	1557431
2018	1591658
2019	1626335
2020	1658241
2021	1686321
2022	1712979
2023	1738709