Year	% net
1984	33.32624
1985	33.95625
1986	32.95244
1988	32.79162
1989	33.24379
1990	27.08335
1992	32.99804
1993	36.29644
1994	38.66781
1995	41.25013
1996	43.90907
1997	47.59339
2006	76.69552
2008	83.58132