Year	% net
1995	84.71006
1998	90.11215
1999	89.67073
2000	91.3123
2001	93.19705
2002	94.49913
2003	96.28332
2004	97.79987
2005	98.83965
2006	100
2009	98.05013
2010	97.33785
2011	97.43288
2012	97.0619
2013	97.38504
2014	97.5809
2015	97.43572
2016	97.42968
2017	98.3545