Year	% net
1983	2.46756
1985	2.99355
1986	3.50964
1989	5.27344
1992	6.67478
1993	6.8609
1994	6.86524
1999	8.63831
2001	7.98013
2003	9.48721
2004	10.55512
2005	11.39514
2006	12.2104
2007	12.92052
2008	14.773
2009	15.822
2010	16.48295
2011	18.46052
2012	19.74492
2013	21.66185
2015	26.53378
2016	28.10485
2017	29.14227
2018	31.00148