Year	Number
1996	38.2513656616211
1998	30.0546455383301
2000	26.2295074462891
2002	27.5675678253174
2003	24.8648643493652
2004	13.9303483963013
2005	30.3921566009521
2006	9.7560977935791
2007	6.7961163520813
2008	4.85436916351318
2009	7.17703342437744
2010	6.22009563446045
2011	7.10900497436523
2012	9.47867298126221
2013	9.00473976135254
2014	8.65384578704834
2015	7.14285707473755
2016	10.4761905670166
2017	11.9047622680664
2018	11.9047622680664
2019	15.2380952835083
2020	10.9523811340332
2021	11.9047622680664
2022	12.2641506195068