Year	Number
1973	165614
1974	158661
1975	196605
1976	216248
1977	225741
1979	239759
1980	255231
1981	248001
1982	238063
1983	242389
1984	237758
1985	243575
1986	237713
1987	236391
1988	247499
1989	241000
1991	252070
1993	235071
1999	231177
2000	228764
2001	227703
2002	228316
2003	229701
2004	245533
2005	246332
2007	257186
2008	262608
2009	266933
2010	260371
2011	260325
2013	228935
2014	223920
2015	215200
2016	216813
2017	204080
2018	200563
2019	203115
2020	193637
2021	195611
2022	184404