Year	Number
1960	249692
1961	259459.99999999997
1962	269625
1963	280189
1964	291181
1965	302573
1966	314427
1967	326745
1968	339564
1969	352849
1970	366673
1971	379379
1972	391514
1973	404003
1974	416908
1975	430225
1976	443987
1977	458149
1978	472784
1979	484968
1980	493874
1981	502919
1982	512143
1983	521534.99999999994
1984	531113
1985	540840
1986	550759
1987	560860
1988	571160
1989	575403
1990	572512
1991	569635
1992	566769
1993	563925
1994	561092
1995	558272
1996	555463
1997	552676
1998	549899
1999	547136
2000	544383
2001	541859
2002	540027
2003	538201
2004	536379
2005	534567
2006	532760
2007	530958
2008	529160
2009	527373
2010	525590
2011	524931
2012	526509
2013	528086
2014	529671
2015	531260
2016	532856
2017	534453
2018	536055
2019	537563
2020	538894
2021	539978
2022	540775
2023	541275