Year	Number
1990	32664
1991	28505
1992	28078
1993	27700
1994	27626
1995	27333
1996	27520
1997	27847
1998	28343
1999	28978
2000	29802
2001	30833
2002	31953
2003	35082
2004	33673
2005	34464
2006	35411
2007	35751
2008	36009
2009	35753
2010	35017
2011	36320
2012	44610
2013	44190
2014	39824
2015	42533
2016	38805
2017	39324
2018	41412
2019	36798
2020	33630
2021	33226
2022	31544