Year	% net
1994	32.13218
1996	36.64819
1998	41.23949
1999	43.94977
2001	50.15347
2002	51.21616
2003	52.37881
2004	54.37015
2005	55.11095
2006	55.27901
2007	56.0224
2008	57.0192
2009	57.53876
2010	58.41696
2011	60.10205
2012	65.80062