Year	% net
1983	1.67287
1986	2.39686
1989	3.63422
1992	4.65139
1993	4.78067
1994	4.91482
1999	6.44441
2001	6.32618
2003	7.67682
2004	8.56467
2005	9.41725
2006	10.1525
2007	10.81736
2008	12.50616
2009	13.44634
2010	14.38973
2011	16.38828
2012	17.88729
2013	20.16338
2015	25.91824
2016	28.00193
2017	29.33465
2018	31.69258