Year	% net
1992	96.64656
1994	97.00467
1995	95.49888
1996	93.14733
1997	93.57705
1998	94.55807
1999	94.26094
2000	92.67882
2001	95.5092
2002	96.66751
2003	99.36104
2004	96.70622
2006	99.12584
2007	96.31323
2008	96.8042
2009	96.73256
2011	96.74118
2012	96.97145
2013	97.10737
2015	98.72797
2016	96.76212