Year	Number
2011	23.222749710083
2012	29.8578205108643
2013	14.6919431686401
2014	4.2857141494751
2015	4.7619047164917
2016	4.2857141494751
2017	3.80952382087708
2018	5.18867921829224
2019	4.24528312683105
2020	6.13207530975342
2021	5.66037750244141
2022	8.01886749267578