Year	Number
1996	7.65027332305908
1998	4.37158489227295
2000	4.37158489227295
2002	3.78378367424011
2003	4.32432413101196
2004	5.97014904022217
2005	12.7450981140137
2006	6.34146356582642
2007	9.22330093383789
2008	8.25242710113525
2009	7.17703342437744
2010	6.69856452941895
2011	8.53080558776855
2012	9.47867298126221
2013	10.9004735946655
2014	8.65384578704834
2015	7.14285707473755
2016	10
2017	10.9523811340332
2018	16.1904754638672
2019	15.2380952835083
2020	16.1904754638672
2021	12.380952835083
2022	12.7358493804932