Year	Number
1996	3.72340416908264
1998	5.85106372833252
2000	11.640212059021
2002	13.7566137313843
2003	14.070351600647
2004	12.62135887146
2005	16.990291595459
2006	17.3913040161133
2007	12.5603866577148
2008	12.5
2009	9.00473976135254
2010	10.4265403747559
2011	10.4265403747559
2012	6.63507127761841
2013	7.5829381942749
2014	8.09523773193359
2015	6.66666650772095
2016	2.38095235824585
2017	3.80952382087708
2018	6.60377359390259
2019	5.18867921829224
2020	9.43396186828613
2021	8.49056625366211
2022	9.90566062927246