Year	Number
1960	32224839
1961	33321079
1962	34395220
1963	35435890
1964	36407238
1965	37312928
1966	38173967
1967	38980547
1968	39730141
1969	40432241
1970	41103803
1971	41748422
1972	42366419
1973	42963796
1974	43529620
1975	44071979
1976	44614216
1977	45165503
1978	45735576
1979	46334986
1980	46980237
1981	47673269
1982	48403537
1983	49158863
1984	49907266
1985	50613348
1986	51257326
1987	51835316
1988	52335309
1989	52761160
1990	53108144
1991	53351650
1992	53486667
1993	53536729
1994	53526371
1995	53462769
1996	53345365
1997	53178112
1998	52979710
1999	52744598
2000	52470191
2001	52170303
2002	51833209
2003	51445502
2004	51052131
2005	50686613
2006	50322183
2007	49942930
2008	49528437
2009	49077874
2010	48606841
2011	48123831
2012	47621247
2013	47088031
2014	46588376
2015	46162722
2016	45739960
2017	45345189
2018	45059349
2019	44781759
2020	44418962
2021	44024037
2022	43646865
2023	43291232