Year	Number
1996	34.9726791381836
1998	25.1366119384766
2000	19.1256828308105
2002	17.8378372192383
2003	15.1351346969604
2004	7.96019887924194
2005	14.2156858444214
2006	12.1951217651367
2007	10.1941747665405
2008	12.1359224319458
2009	20.0956935882568
2010	16.2679424285889
2011	17.5355453491211
2012	21.3270149230957
2013	26.0663509368896
2014	22.5961532592773
2015	13.3333330154419
2016	14.7619047164917
2017	18.5714282989502
2018	18.0952377319336
2019	19.0476188659668
2020	14.7619047164917
2021	17.619047164917
2022	22.1698112487793