Year	Number
1996	9.54773902893066
1998	12.5
2000	13.4328355789185
2002	4.47761201858521
2003	4.97512435913086
2004	6.25
2005	7.65550231933594
2006	14.3540668487549
2007	13.3971290588379
2008	14.9038457870483
2009	12.3222751617432
2010	11.3744077682495
2011	11.7370891571045
2012	11.2676057815552
2013	12.6760559082031
2014	12.5
2015	14.7619047164917
2016	14.7619047164917
2017	19.0476188659668
2018	18.5714282989502
2019	18.5714282989502
2020	20.9523811340332
2021	20.9523811340332
2022	19.8113212585449