Year	% net
1999	97.11298
2000	94.0137
2001	91.56216
2003	92.39922
2004	93.53502
2005	92.56206
2006	93.69454
2007	93.7401
2008	93.25755
2009	94.49347
2010	95.1229
2011	94.04731
2013	94.99419