Year	% net
2002	44.56638
2003	47.51588
2004	51.92799
2005	54.86775
2006	53.48415
2007	58.72754
2008	59.20603
2009	60.11687
2010	60.55766
2011	58.12014
2012	58.22598
2013	57.63688
2014	60.37147
2015	55.94829
2016	59.97299
2017	59.84739
2018	61.56655