Year	Number
1971	13796
1972	14782
1973	15216
1974	15821
1975	16824
1976	17932
1983	23578
1985	27751
1998	41329
1999	42184
2000	43941
2002	42929
2004	50791
2005	53015
2006	54838
2007	56744
2008	66539
2009	52937
2010	51615
2011	51464
2012	54322
2013	54959
2014	61659
2015	71463
2016	69495
2017	66255
2018	64810
2019	65556.1171875
2020	65041.13671875
2021	59968.65234375
2022	61750