Year	% net
2006	99.8896
2007	98.28937
2008	96.85799
2009	93.66779
2010	92.48981
2011	95.82158
2012	94.52617
2013	95.0242
2014	96.42208
2015	96.28646
2016	95.75701
2017	95.21544
2018	94.58089