Year	% net
1995	81.51449
1998	88.69846
1999	88.72242
2000	90.60384
2001	92.26094
2002	94.46682
2003	96.49306
2004	97.23039
2005	98.38644
2006	99.3052
2009	96.46758
2010	96.64158
2011	97.18822
2012	97.01937
2013	97.53165
2014	97.6126
2015	97.56561
2016	97.61397
2017	98.49294