Year	% net
1999	84.54294
2000	87.75413
2001	87.05709
2002	90.09798
2003	90.47417
2004	91.41347
2005	91.43913
2006	92.71222
2007	92.24494
2008	94.8039
2009	94.61696
2010	96.06002
2011	93.82708
2012	93.43135
2013	94.81663
2014	94.80829
2015	94.80252
2016	94.08939
2017	94.0774