Year	% net
1996	90.45844
1999	86.56954
2000	85.59688
2001	85.77534
2002	85.59525
2003	84.72572
2004	89.74189
2005	87.13952
2006	88.07169
2007	86.9696
2008	86.94104
2009	86.50296
2010	86.74847
2011	86.75932
2012	88.83152