Year % net 1999 97.82877 2000 98.08635 2001 94.53929 2002 95.31814 2003 93.9307 2004 94.63489 2005 97.80506 2006 98.6384 2007 98.86144 2008 99.05832 2009 95.89151 2010 98.91975 2014 99.23471