Year	Number
1960	32864
1961	33787
1962	34725
1963	35694
1964	36685
1965	37695
1966	38681
1967	39610
1968	40468
1969	41266
1970	42025
1971	42752
1972	43461
1973	44153
1974	44852
1975	45563
1976	46265
1977	46755
1978	47010
1979	47215
1980	47382
1981	47517
1982	47630
1983	47732
1984	47829
1985	47917
1986	47997
1987	48172
1988	48416
1989	48599
1990	48727
1991	48818
1992	48890
1993	48954
1994	49033
1995	49124
1996	49200
1997	49430
1998	49797
1999	50133
2000	50460
2001	50782
2002	51093
2003	51398
2004	51713
2005	52015
2006	52297
2007	52584
2008	52863
2009	53093
2010	53313
2011	53530
2012	53580
2013	53482
2014	53359
2015	53207
2016	53093
2017	53032
2018	52981
2019	52956
2020	53161
2021	53578
2022	54010
2023	54456