Year	% net
1999	29.18907
2000	33.51244
2001	34.48969
2002	34.01761
2003	34.59136
2004	38.96942
2005	40.21547
2006	42.52317
2007	43.2794
2009	44.94987
2010	45.94476
2014	48.97389
2016	58.52291
2017	62.02187
2018	66.63893