Year	% net
1999	60.00137
2000	61.25926
2001	63.36285
2002	65.09736
2004	64.48259
2005	64.54137
2008	66.10004
2009	66.36634
2010	68.58165
2011	68.39254
2013	72.99069
2014	71.80451
2015	72.08741
2017	65.94409