Year	Number
1996	29.7872333526611
1998	30.319149017334
2000	30.1587295532227
2002	20.1058197021484
2003	47.2361793518066
2004	36.4077682495117
2005	29.1262130737305
2006	39.613525390625
2007	34.2995185852051
2008	17.7884616851807
2009	14.6919431686401
2010	9.95260620117188
2011	14.6919431686401
2012	19.4312801361084
2013	17.0616111755371
2014	16.6666660308838
2015	21.4285717010498
2016	23.8095245361328
2017	22.8571434020996
2018	14.6226415634155
2019	22.6415100097656
2020	16.0377349853516
2021	17.9245281219482
2022	16.0377349853516