Year	Number
1973	24600
1974	26019
1975	24792
1976	24303
1993	45587
1994	46082
1995	47498
1997	46458
1998	32850
1999	35515
2000	36174
2001	37295
2003	40741
2004	42944
2005	43866
2006	46299
2007	46427
2008	46801
2009	46091
2010	44670
2011	43121
2012	41353
2013	42991
2014	41645
2015	41913
2016	42623
2017	45123
2018	44182
2019	44778
2020	45118
2021	45533
2022	45876