Year	% net
1995	80.32739
1996	81.25881
1997	81.95335
1998	81.63724
1999	82.83267
2000	83.96686
2001	85.36463
2002	86.47308
2003	86.86822
2004	86.43209
2005	87.42453
2006	87.61808
2007	88.0053
2008	88.58306
2009	88.54583
2010	88.71338
2011	88.62826
2012	88.56838
2013	89.68087
2014	89.51156
2015	89.81324
2016	89.62629
2017	89.76877
2018	89.73885