Year	Number
1996	14.2076501846313
1998	6.01092910766602
2000	4.37158489227295
2002	8.64864826202393
2003	4.32432413101196
2004	5.97014904022217
2005	7.84313726425171
2006	6.34146356582642
2007	7.76699018478394
2008	4.85436916351318
2009	6.22009563446045
2010	6.22009563446045
2011	8.05687236785889
2012	10.9004735946655
2013	9.00473976135254
2014	15.384614944458
2015	12.380952835083
2016	11.9047622680664
2017	13.3333330154419
2018	15.2380952835083
2019	14.2857141494751
2020	17.1428565979004
2021	16.1904754638672
2022	22.1698112487793