Year	Number
1964	44000
1965	45000
1966	45000
1967	50000
1968	55000
1969	56150
1970	56500
1971	56180
1972	57680
1973	58840
1974	59900
1981	3510
1982	5010
1983	6930
1984	7200
1985	6720
1986	6440
1987	6720
1988	6645
1989	9549
1990	212743
1991	210569
1992	258372
1993	262802
1994	258342
1995	227481
1996	233371
1997	223072
1998	185516
1999	180031
2000	170940
2001	169548
2002	168853
2003	164754
2004	162683
2005	139284
2006	158358
2007	161534
2008	184539
2009	185318
2010	184814
2011	185118
2012	185644
2013	188391
2014	199931
2015	201379
2016	197848
2017	197142
2018	195887
2019	195103
2020	195373
2021	212413
2022	242835
2023	252867