Year	Number
1960	803227
1961	809126
1962	814144
1963	819884
1964	825867
1965	830253
1966	831637
1967	833104
1968	836087
1969	838795
1970	841174
1971	844164
1972	848549
1973	854493
1974	861575
1975	868416
1976	874385
1977	879996
1978	885019
1979	888398
1980	891219
1981	895646
1982	901878
1983	908200
1984	913917
1985	919552
1986	925239
1987	930789
1988	935069
1989	934514
1990	928519
1991	920018
1992	904117
1993	884943
1994	871070
1995	860896
1996	853550
1997	847638
1998	843440
1999	840854
2000	835896
2001	827575
2002	819976
2003	812568
2004	803107
2005	793792
2006	785438
2007	777332
2008	766729
2009	751027
2010	732552
2011	715500
2012	701359
2013	687380
2014	673942
2015	662001
2016	649606
2017	637471
2018	627178
2019	617353
2020	607572
2021	599150
2022	594868
2023	592416