Year years 2003 3.3 2004 3.3 2005 3.3 2006 3.3 2007 3.3 2008 3.3 2009 3.3 2010 3.3 2011 3.3 2012 3.3 2013 3.3 2014 3.3 2015 3.3 2016 3.3 2017 3.3 2018 3.3 2019 3.3