Year % 2007 6.89 2008 6.89 2009 6.89 2010 6.89 2011 6.89 2012 6.86 2013 7 2014 6.86 2015 7 2016 7 2017 7.01 2018 7.01 2019 7.01 2020 7.01 2021 7.01