Year	Number
1996	43.7158470153809
1998	38.2513656616211
2000	44.2622947692871
2002	39.4594612121582
2003	37.8378372192383
2004	29.3532333374023
2005	21.0784320831299
2006	26.3414630889893
2007	29.6116504669189
2008	28.1553401947021
2009	25.8373203277588
2010	27.7511959075928
2011	27.014217376709
2012	26.0663509368896
2013	30.3317527770996
2014	26.9230766296387
2015	31.4285717010498
2016	25.238094329834
2017	28.0952377319336
2018	27.619047164917
2019	21.4285717010498
2020	18.5714282989502
2021	17.1428565979004
2022	21.698112487793