Year	%
2006	10.046897103003873
2007	-3.5851111102593656
2008	12.55796014380185
2009	17.542928928609367
2010	11.364093741818298
2011	-1.2415060098200148
2012	7.174387247537628
2013	9.784495938599244
2014	14.35168933800434
2015	12.252548162951765
2016	17.58393816245429
2017	12.141178295651297