Year	Number
1990	14193
1991	14037
1992	13893
1993	13476
1994	13020
1995	12634
1996	12220
1997	11885
1998	11561
1999	11317
2000	11099
2001	10854
2002	10624
2003	10398
2004	10142
2005	9875
2006	9273
2007	9033
2008	8867
2009	8533
2010	8177
2011	7814
2012	7581
2013	7341
2014	7167
2015	6857
2016	6586
2017	6421
2018	6117
2019	5885
2020	5741
2021	5516
2022	5340