Year	% net
2005	99.70359
2006	99.86248
2007	98.34468
2008	96.99485
2009	94.22315
2010	92.74722
2011	95.70457
2012	94.43076
2013	94.79516
2014	96.24177
2015	96.30226
2016	95.73023
2017	95.17741
2018	94.55098