Year	Number
2011	8.45070457458496
2012	5.16431903839111
2013	3.75586843490601
2014	3.44827580451965
2015	3.44827580451965
2016	0.985221683979034
2017	0.985221683979034
2018	0
2019	0
2020	0.483091801404953
2021	0
2022	0