Year % 1997 105.26 2001 105.26 2002 105.26 2003 105.26 2004 105.79 2005 105.79 2006 105.79 2007 106.1 2008 106.1 2009 106.1 2010 106.1 2011 106.1 2012 107.26 2013 107.26 2015 107.26 2016 107.26 2018 107.61 2020 107.61 2021 107.61