Year	% net
1995	92.8819
1996	94.64365
1997	95.33336
1998	95.45708
1999	94.5026
2000	93.74958
2001	94.28742
2002	94.80335
2003	95.93885
2004	97.98136
2005	97.42762
2006	97.06657
2007	97.9324
2008	98.08463
2009	98.15806
2010	98.42773
2011	98.54252
2012	98.53409
2013	98.33088
2014	98.14499
2015	98.02977
2016	98.11903
2017	98.26288