Year	Number
1960	258508
1961	262473
1962	265973
1963	267239
1964	268661
1965	270532
1966	274132
1967	280408
1968	287173
1969	295280
1970	305531
1971	316543
1972	313353
1973	318357
1974	324612
1975	328634
1976	334519
1977	338588
1978	339443
1979	340945
1980	339515
1981	337309
1982	333270
1983	321586
1984	312571
1985	302873
1986	291118
1987	280483
1988	268156
1989	259373
1990	247650
1991	233444
1992	221537
1993	211721
1994	206181
1995	196253
1996	188585
1997	185638
1998	178975
1999	172143
2000	166002
2001	159434
2002	152879
2003	145914
2004	138712
2005	130031
2006	122474
2007	115566
2008	108194
2009	100696
2010	93829
2011	87755
2012	83454
2013	80282
2014	76563
2015	72826
2016	69905
2017	65412
2018	62661
2019	59959
2020	56931
2021	54501
2022	51988