Year	Number
1990	27413
1991	28473
1992	29482
1993	30225
1994	30767
1995	30990
1996	30928
1997	30661
1998	30240
1999	29719
2000	29123
2001	28532
2002	27919
2003	27413
2004	27143
2005	36439
2006	27101
2007	27280
2008	27449
2009	27470
2010	27386
2011	27219
2012	27037
2013	26850
2014	26660
2015	26469
2016	26303
2017	26093
2018	25794
2019	25383
2020	24837
2021	24196
2022	23570