Year	% net
1994	42.46063
1995	48.47334
1996	52.71616
1998	58.15936
1999	58.52841
2000	59.06248
2001	62.5021
2002	63.03139
2003	66.72922
2004	74.57676
2005	73.601
2006	76.13907
2007	77.32357
2008	74.34639
2009	73.4148
2010	73.81261
2011	74.38832
2012	73.69015
2013	76.30237
2014	78.07788
2016	74.95664
2017	79.92064
2018	80.85963