Year % 1999 0.02 2000 4.96 2001 6.94 2002 6.94 2003 4.96 2004 4.96 2005 4.48 2006 4.48 2007 4.97 2008 4.97 2009 4.97 2010 4.97 2011 4.97 2013 4.97 2015 4.98 2017 5.23 2018 5.23 2019 5.23 2020 5.23 2021 5.21