Year	Number
2008	0.84583979845047
2009	0.830009639263153
2010	0.852396905422211
2011	0.895488560199738
2012	0.942501664161682
2013	0.731665253639221
2014	0.88739550113678
2015	0.415799975395203
2016	0.419982314109802
2017	0.398798853158951
2018	0.395766466856003
2019	0.404866963624954
2020	0.377533257007599
2021	0.427034884691238
2022	0.462532371282578