Year	Number
1960	423111
1961	434553
1962	446536
1963	459063
1964	472187
1965	485937
1966	500322
1967	515312
1968	530867
1969	546956
1970	563527
1971	580527
1972	597978
1973	615929
1974	634396
1975	653414
1976	672961
1977	692752
1978	712892
1979	733660
1980	755155
1981	777563
1982	800818
1983	824768
1984	849360
1985	874558
1986	900302
1987	926689
1988	953891
1989	978314
1990	1003601
1991	1033456
1992	1073729
1993	1118110
1994	1156780
1995	1189000
1996	1212922
1997	1240380
1998	1273286
1999	1308144
2000	1345099
2001	1379893
2002	1412682
2003	1446195
2004	1480531
2005	1516097
2006	1553092
2007	1591630
2008	1635897
2009	1686890
2010	1741544
2011	1799948
2012	1861624
2013	1917938
2014	1968143
2015	2019734
2016	2072630
2017	2126733
2018	2182110
2019	2238719
2020	2296186
2021	2354385
2022	2414911
2023	2478273