Year	Number
1973	9280
1979	6929
1980	7489
1985	9575
1986	10382
1987	11230
1988	12081
1989	12422
1990	12507
1998	31787
1999	35424
2000	36347
2001	41765
2002	46355
2003	56910
2004	68426
2005	72810
2006	80051
2007	81786
2008	72434
2009	77263
2010	78347
2011	81190
2012	78649
2013	78664
2016	97620.578125
2017	99194.09375
2018	101344
2020	127482
2021	115241
2022	149499