Year	% net
1998	46.36659
1999	47.57394
2001	46.5817
2002	49.55082
2003	52.34159
2004	53.99368
2005	53.42588
2006	53.5165
2007	54.3951
2008	55.15425
2009	55.99163
2014	60.96966
2015	60.15612