Year	Number
1994	12500
1995	12500
1996	8700
1997	8700
1998	8800
1999	18500
2000	21858
2001	23963
2002	23963
2003	24460
2004	16316
2005	14094
2006	15602
2007	15590
2008	15665
2009	15337
2010	3221
2011	1617.84131054131
2012	1440.73219373219
2013	12871.0166080453
2014	6068.32
2015	8548
2016	12890
2017	16843
2018	18184
2019	17075
2020	9671.143
2021	6510.885