Year	Number
1960	664560
1961	683202
1962	714190
1963	735112
1964	745705
1965	755989
1966	751509
1967	757851
1968	758604
1969	751571
1970	746651
1971	739199
1972	731324
1973	728509
1974	726577
1975	713997
1976	696262
1977	679285
1978	663980
1979	674697
1980	670512
1981	670477
1982	670429
1983	671596
1984	669920
1985	669004
1986	665287
1987	654972
1988	642948
1989	633796
1990	621892
1991	614997
1992	609329
1993	608926
1994	610719
1995	608806
1996	622939
1997	617309
1998	610438
1999	601950
2000	590807
2001	579170
2002	567232
2003	549495
2004	533302
2005	512710
2006	494525
2007	482870
2008	472863
2009	459697
2010	446878
2011	436297
2012	435425
2013	435532
2014	436640
2015	437038
2016	441795
2017	453666
2018	464688
2019	474201
2020	475049
2021	468303
2022	459221
2023	464365