Year	% net
1985	51.64179
1992	59.41358
1994	64.74719
1999	78.27815
2000	75
2001	78.41191
2011	77.08978
2012	77.21022
2013	74.78673
2014	74.26199
2015	76.08696
2016	72.80859
2017	64.48184