Year	Number
1996	28.8043479919434
1998	34.7826080322266
2000	30.4347820281982
2002	40
2003	21.0810813903809
2004	15.9203977584839
2005	9.80392169952393
2006	11.764705657959
2007	15.0485439300537
2008	11.6504850387573
2009	9.56937789916992
2010	13.8755979537964
2011	15.1658763885498
2012	17.0616111755371
2013	23.222749710083
2014	25.480770111084
2015	26.1904754638672
2016	23.8095245361328
2017	24.2857151031494
2018	18.0952377319336
2019	16.6666660308838
2020	16.1904754638672
2021	16.6666660308838
2022	20.2830181121826