Year	% net
1984	93.68442
1986	96.97578
1994	99.48393
2000	96.71752
2002	97.78367
2003	97.84058
2004	97.05687
2005	96.01852
2007	95.72852
2008	95.28182
2009	95.53163
2010	94.8599
2011	94.74164
2012	95.33527
2013	92.18069
2014	90.44287
2015	93.19511
2016	93.21147
2017	93.58439