Year	Number
1996	12.0603017807007
1998	10.5
2000	11.9402980804443
2002	5.47263669967651
2003	9.95024871826172
2004	7.21153831481934
2005	5.26315784454346
2006	4.78468894958496
2007	9.56937789916992
2008	10.0961542129517
2009	6.63507127761841
2010	4.7393364906311
2011	3.28638505935669
2012	7.98122072219849
2013	9.85915470123291
2014	10.0961542129517
2015	10.9523811340332
2016	11.9047622680664
2017	10.9523811340332
2018	12.8571424484253
2019	13.3333330154419
2020	12.8571424484253
2021	18.5714282989502
2022	21.698112487793