Year	Number
1960	174279
1961	178913
1962	182961
1963	185917
1964	187240
1965	186663
1966	184101
1967	179982
1968	175119
1969	170575
1970	167036
1971	164801
1972	163744
1973	163450
1974	163255
1975	162711
1976	161702
1977	160417
1978	159121
1979	158180
1980	157825
1981	157922
1982	158287
1983	158890
1984	159383
1985	159465
1986	159042
1987	158169
1988	157006
1989	155864
1990	154950
1991	154174
1992	152889
1993	151097
1994	149245
1995	147190
1996	144828
1997	142155
1998	139231
1999	136309
2000	133568
2001	131722
2002	130023
2003	128543
2004	127126
2005	125829
2006	124438
2007	123001
2008	121756
2009	120803
2010	119769
2011	118426
2012	117215
2013	116341
2014	115763
2015	115253
2016	114660
2017	114095
2018	113590
2019	113323
2020	113117
2021	112582
2022	111686
2023	110471