Year	%
2010	7.68539480893566
2011	7.5351167253222
2012	7.67717422206232
2013	7.48548984386741
2014	7.1451600357314
2015	7.03798113217368
2016	7.32457471338062
2017	6.63942230277621
2018	6.7287898522671
2019	6.87991830877405
2020	6.81023539088295
2021	6.73751772733858