Year	% net
2000	60.7533
2001	63.50595
2002	67.92025
2003	70.47711
2004	72.71429
2005	73.64146
2006	73.30879
2007	73.03837
2008	72.35473
2009	73.31519
2010	73.39152
2011	73.15149
2012	74.50503
2013	76.07971
2014	76.67002
2015	77.23552
2016	77.39237
2017	76.6115
2018	76.97286