Year	Number
1996	4.9180326461792
1998	4.37158489227295
2000	3.27868843078613
2002	1.62162160873413
2003	4.32432413101196
2004	9.95024871826172
2005	7.35294103622437
2006	12.6829271316528
2007	12.1359224319458
2008	11.1650485992432
2009	9.09090900421143
2010	9.09090900421143
2011	9.95260620117188
2012	9.95260620117188
2013	10.9004735946655
2014	10.0961542129517
2015	8.5714282989502
2016	10
2017	10
2018	10.9523811340332
2019	10.9523811340332
2020	12.8571424484253
2021	11.9047622680664
2022	11.7924528121948