2008

0.362

0.284

0.352

2009

0.423

0.259

0.402

2010

0.476

0.234

0.446

2011

0.534

0.192

0.492

2012

0.668

0.190

0.608

2013

0.727

0.330

0.678

2014

0.854

0.458

0.805

2015

0.910

0.637

0.876

2016

0.904

0.704

0.879