Year	Number
1996	16.1290321350098
1998	19.2513370513916
2000	18.0851058959961
2002	17.4603176116943
2003	14.2857141494751
2004	14.2857141494751
2005	10.2439022064209
2006	7.31707334518433
2007	10.6796112060547
2008	5.33980560302734
2009	9.56937789916992
2010	6.1904764175415
2011	5.21327018737793
2012	13.2701425552368
2013	12.7962083816528
2014	11.5384616851807
2015	11.4285717010498
2016	9.0476188659668
2017	9.0476188659668
2018	8.5714282989502
2019	9.5238094329834
2020	10.4761905670166
2021	11.4285717010498
2022	9.90566062927246