Year Percent 2000 1.24812 2001 1.02547 2002 1.01642 2003 1.01458 2004 1.05346 2005 1.0654 2006 1.05508 2007 1.08587 2008 1.11964 2012 1.00507 2014 0.96074 2016 1.02341