Year	Number
1991	26177
1992	26708
1993	27793
1994	30555
1995	31624
1996	34201
1997	35514
1998	36413
1999	36810
2000	37469
2001	40523
2002	41328
2003	41651
2004	42533
2005	42243
2006	43026
2007	44106
2008	43971
2009	44232
2010	43610
2011	43242
2012	41221
2013	41012
2014	41012
2015	40830
2016	37516
2017	39293
2018	41164
2019	40946
2020	40160
2021	40270
2022	39926