Year	Number
1990	10368
1991	10888
1992	10555
1993	10478
1994	10431
1995	10368
1996	10301
1997	10283
1998	10253
1999	10147
2000	10034
2001	10268
2002	10788
2003	10881
2004	10831
2005	10808
2006	10795
2007	10595
2008	10452
2009	10239
2010	10025
2011	9845
2012	9663
2013	9381
2014	9176
2015	8968
2016	8799
2017	8723
2018	8624
2019	8527
2020	8397
2021	8289
2022	8168