Year	% net
1999	59.06458
2000	62.47976
2001	57.346
2002	59.89725
2003	59.57402
2005	63.70558
2006	62.81248
2007	68.15086
2008	73.32313
2009	72.36103
2011	80.58882
2012	79.38927
2013	84.93016
2014	86.99201
2015	89.28957
2016	86.38027
2017	85.1822
2018	84.48045
2019	86.15823