Year	% net
1999	28.82961
2000	29.31743
2001	28.19991
2002	29.69717
2003	30.71382
2005	33.88762
2006	35.51335
2007	40.95638
2008	41.85518
2009	40.67466
2013	51.31482
2014	51.3943
2015	55.00608
2016	55.50014
2017	55.81603
2018	58.78122
2019	57.88249