Year	% net
1992	16.90863
1993	16.95485
1994	17.46542
1995	17.93104
1996	17.92783
1997	17.9565
1998	18.606
1999	19.18446
2000	19.91704
2001	20.45887
2002	21.36835
2003	22.0582
2004	23.3416
2005	24.62631
2006	26.32616
2007	27.84311
2008	29.68569
2009	30.8727
2010	31.97314
2011	32.63915
2012	33.30353
2013	33.36792
2014	33.96351
2015	34.85357
2016	34.73596
2017	34.92346
2018	35.18121