Year	% net
1999	85.94919
2000	88.12483
2001	90.55853
2002	93.39797
2003	91.90002
2004	91.94538
2005	91.09699
2006	90.96668
2007	92.08533
2008	90.15217
2009	92.07496
2010	92.50796
2011	92.77521
2012	91.4785
2013	90.71424
2014	91.2639
2015	90.64407
2016	88.81349
2017	87.24097