Year	Number
2011	11.3744077682495
2012	13.2701425552368
2013	12.3222751617432
2014	8.17307662963867
2015	6.1904764175415
2016	5.7142858505249
2017	3.33333325386047
2018	3.33333325386047
2019	4.7619047164917
2020	4.2857141494751
2021	3.80952382087708
2022	3.77358484268188