Year	% net
2005	67.05516
2006	71.53961
2007	74.20973
2008	74.76274
2009	77.28964
2010	78.27416
2011	80.18614
2012	78.77746
2013	79.381
2014	78.5674
2015	78.53982
2016	79.04928
2017	79.31285
2018	80.16872