Year	% net
1998	50.87802
1999	52.17929
2001	55.37757
2002	59.92832
2003	62.61296
2004	64.81646
2005	64.56834
2006	64.82426
2007	65.45874
2008	65.7531
2009	66.32326
2014	72.09681
2015	71.3301