Year	Number
2005	0.566941857337952
2006	0.491237699985504
2007	0.556155622005463
2008	0.636225163936615
2009	0.534019529819489
2010	0.471215486526489
2011	0.384573996067047
2012	0.416676908731461
2013	0.504134058952332
2014	0.48229768872261
2015	0.390668779611588
2016	0.384507298469543
2017	0.392347872257233
2018	0.385205060243607
2019	0.391434550285339
2020	0.427005618810654
2021	0.422974407672882
2022	0.400206208229065