Year % 1999 0.09 2000 5.02 2001 7.01 2002 7.01 2003 5.03 2004 5.02 2005 5.02 2006 5.02 2007 5.03 2008 5.03 2009 5.03 2010 5.05 2011 5.06 2013 5.06 2015 5.07 2017 5.81 2018 5.81 2019 5.81 2020 5.82 2021 5.72