Year	%
2007	66.90309
2008	67.09677
2009	66.99983
2010	65.3824
2011	68.06493
2012	63.81161
2013	64.26066
2014	63.39843
2015	63.746
2016	63.70781
2017	62.84516
2018	59.95472
2019	60.3581
2020	58.81205
2021	58.81205