Year	% net
1976	1.2969
1977	1.37264
1980	1.45979
1982	1.90099
1983	1.54153
1984	1.61013
1985	1.85854
1986	2.02702
1987	2.3326
1993	4.01448
2009	11.83077
2010	13.68895
2011	15.45501
2012	17.44259
2013	21.05094
2014	26.212
2015	30.04619
2016	33.93295
2017	31.38195
2018	31.01462