Year	% net
1993	75.46534
1994	83.3965
1995	88.30312
1996	89.71776
1997	89.75655
1998	89.14421
1999	86.71633
2000	86.73186
2001	90.82164
2002	90.32119
2003	93.75522
2005	94.78301
2006	93.63917
2007	93.5923
2008	89.59519
2009	90.52641
2010	90.70308
2011	90.43957
2012	89.10412
2015	86.0346
2016	83.92268
2017	82.0348