Year	% net
1999	87.5546
2000	88.4001
2001	89.49247
2002	90.63885
2003	91.3694
2004	89.28341
2005	92.29505
2006	92.01749
2007	91.38406
2008	90.29864
2009	89.20872
2010	88.63195
2011	88.02281
2012	88.32915
2013	90.38196
2014	91.14587
2015	92.32144
2016	93.18467
2017	93.93706