Year	% net
1986	66.65002
1988	74.02878
1989	74.49093
1992	78.84069
2000	95.96279
2002	89.66991
2003	86.79782
2004	85.74149
2005	87.2079
2007	90.39366
2008	97.39046
2009	95.77059
2010	96.25154
2011	95.24622
2012	79.1808
2013	97.78965
2014	97.13024
2015	98.37622
2016	98.00256