Year	Number
1996	11.4130430221558
1998	7.60869550704956
2000	12.5
2002	9.72972965240479
2003	8.10810852050781
2004	6.96517419815063
2005	7.35294103622437
2006	17.6470584869385
2007	17.9611644744873
2008	16.990291595459
2009	8.13397121429443
2010	7.17703342437744
2011	9.00473976135254
2012	10.9004735946655
2013	17.5355453491211
2014	13.4615383148193
2015	12.380952835083
2016	12.380952835083
2017	10.4761905670166
2018	9.0476188659668
2019	9.0476188659668
2020	10.4761905670166
2021	10
2022	11.3207550048828