Year	% net
1986	65.74044
1988	70.99644
1989	71.61765
1992	77.85714
2002	85.44474
2003	79.33363
2004	79.04328
2005	82.80669
2007	89.19961
2008	94.8914
2009	91.66539
2010	97.54541
2011	94.59459
2012	79.07435
2013	97.61905
2014	98.39519
2015	98.67617
2016	96.26943