Year	% net
1974	0.73599
1976	0.92946
1977	1.16387
1978	1.39112
1979	1.58848
1981	1.99391
1990	3.08281
1991	3.33299
1997	3.9413
1999	4.07858
2001	4.06247
2002	4.21628
2003	4.73061
2004	5.75062
2005	6.7604
2007	6.81181
2008	7.26373
2009	7.37037
2010	9.11368
2011	9.35062
2014	12.4236
2015	13.72503
2017	17.06071