Year	Number
2010	21.4285717010498
2011	14.2180099487305
2012	5.21327018737793
2013	2.84360194206238
2014	0.480769217014313
2015	0
2016	0
2017	0
2018	0.476190477609634
2019	0
2020	0
2021	0
2022	0