Year	% net
1980	78.88562
1995	59.40625
1996	60.71197
1997	57.52066
1998	58.89668
1999	58.16367
2000	62.02657
2001	67.90587
2002	71.64472
2003	76.57937
2004	80.71236
2005	82.74727
2006	81.88655