Year	Number
1992	45400
1993	26400
1994	11400
1995	22600
1996	27700
1997	30600
1998	29800
1999	29500
2000	27973
2001	32864
2002	26859
2003	39778
2004	42374
2005	41911
2006	48562
2007	30029
2008	52509
2009	58756
2010	66038
2011	76652.2681818182
2012	73378.9426182735
2013	58474.09
2014	47927.4
2015	45688
2016	55261
2017	63315
2018	66712
2019	62113.332
2020	20436
2021	33922