Year	% net
1999	70.50595
2000	82.49178
2001	79.74948
2003	82.61871
2004	82.84205
2005	81.17866
2006	67.11358
2009	64.05132
2010	70.42792
2011	70.41689
2015	80.0335
2016	84.38385