Year	% net
2002	85.03821
2003	83.04899
2005	82.18023
2006	84.90701
2007	89.24942
2011	95.76167
2012	96.88121
2013	95.29451
2014	94.17595
2015	93.29142
2016	92.50096
2017	91.91511
2018	90.5458