Year	Number
1991	9504
1992	75442
1993	85334
1994	103270
1995	104746
1996	106820
1997	108702
1998	105690
1999	107619
2000	108943
2001	110844
2002	112524
2003	103977
2004	105259
2005	106539
2006	108069
2007	110593
2008	104960
2009	89064
2010	75062
2011	57980
2012	41582
2013	31556
2014	23633
2015	17709
2016	11757
2017	7954
2018	7100
2019	6839
2020	6741
2021	6702
2022	6688
2023	6676