Year	Number
1996	7.60869550704956
1998	8.69565200805664
2000	7.60869550704956
2002	4.86486482620239
2003	8.10810852050781
2004	7.46268653869629
2005	9.80392169952393
2006	6.86274528503418
2007	4.85436916351318
2008	5.33980560302734
2009	6.22009563446045
2010	7.17703342437744
2011	8.53080558776855
2012	9.00473976135254
2013	8.05687236785889
2014	7.21153831481934
2015	10
2016	10.4761905670166
2017	10.4761905670166
2018	11.4285717010498
2019	10.9523811340332
2020	10.4761905670166
2021	9.0476188659668
2022	7.07547187805176