Year	Number
2004	18.9054718017578
2005	30.3921566009521
2006	19.0243911743164
2007	16.5048542022705
2008	21.3592224121094
2009	20.5741634368896
2010	24.8803825378418
2011	25.5924167633057
2012	26.5402851104736
2013	28.4360198974609
2014	13.942307472229
2015	6.66666650772095
2016	6.1904764175415
2017	5.7142858505249
2018	13.3333330154419
2019	11.9047622680664
2020	13.3333330154419
2021	10.9523811340332
2022	11.7924528121948