Year	Number
1990	123583
1991	112963
1992	102599
1993	92790
1994	84782
1995	79469
1996	76154
1997	74752
1998	73361
1999	70938
2000	68783
2001	67072
2002	65560
2003	64189
2004	63054
2005	61671
2006	58578
2007	53447
2008	48141
2009	43036
2010	37814
2011	33641
2012	30979
2013	28828
2014	27069
2015	25749
2016	24682
2017	23764
2018	22876
2019	22071
2020	21332
2021	20867
2022	20540