Year	% net
1999	57.89835
2000	61.53113
2001	56.84276
2002	59.54078
2003	59.56639
2005	63.32062
2006	63.04661
2007	68.22566
2008	73.55856
2009	72.46616
2011	80.68405
2013	85.1253
2014	87.16338
2015	89.46214
2016	87.10359
2017	85.75493
2018	85.08209
2019	86.60582