Year	% net
1998	55.17169
1999	56.0654
2000	52.96973
2001	55.69137
2002	57.61187
2003	58.68158
2004	60.63441
2005	60.92822
2006	63.10804
2007	60.38555
2008	61.77234
2009	63.19261
2010	65.36444
2011	65.84296
2012	65.10483
2013	64.62293