Year	%
2008	8.82808855907255
2009	9.55104961010364
2010	9.40913983394322
2011	10.2151670069829
2012	10.2456184684884
2013	10.1826312654019
2014	10.1425145493149
2015	10.1461765806785
2016	10.2290055039166
2017	10.0164539068243
2018	9.57589948456617
2019	9.19076970526613
2020	8.83857137681346
2021	8.90011640889246
2022	8.79153051685699