Year	Number
1990	15803
1991	15293
1992	15757
1993	15258
1994	13748
1995	13568
1996	12676
1997	12117
1998	11523
1999	10896
2000	10285
2001	9686
2002	9134
2003	8657
2004	8237
2005	7875
2006	7539
2007	7227
2008	6942
2009	6689
2010	6469
2011	6987
2012	6160
2013	6088
2014	6026
2015	5962
2016	5887
2017	5796
2018	5677
2019	5565
2020	5478
2021	5376
2022	5467