Year % 1996 100 1997 100 1998 100 1999 100 2000 100 2001 100 2002 99.92 2003 99.92 2004 99.92 2005 99.92 2006 99.92 2007 100 2008 100 2009 100 2010 100 2011 100 2012 100 2013 99.92 2014 99.92 2015 99.92 2016 99.92 2017 99.92 2019 99.85 2020 99.92 2021 99.92