Year	Number
1990	92070
1991	87277
1992	82921
1993	78138
1994	73885
1995	69506
1996	66456
1997	63586
1998	60994
1999	58560
2000	57191
2001	55137
2002	53638
2003	52533
2004	51158
2005	49769
2006	49312
2007	48749
2008	47714
2009	45887
2010	44416
2011	43124
2012	42426
2013	41267
2014	40666
2015	39704
2016	38751
2017	37518
2018	36409
2019	35351
2020	33914
2021	32627
2022	31190