Year	Number
2011	15.4929580688477
2012	10.3286380767822
2013	8.92018795013428
2014	4.92610836029053
2015	5.41871929168701
2016	3.94088673591614
2017	2.95566511154175
2018	1.45631062984467
2019	1.93236720561981
2020	2.4154589176178
2021	2.4154589176178
2022	3.38164258003235