Year 1=low to 6=high 2005 3.375 2006 3.3125 2007 3.3125 2008 3.25 2009 3.25 2010 3.1875 2011 3.25 2012 3.1875 2013 3.1875 2014 3.1875 2015 3.1875 2016 3.2857142857142856 2017 3.2857142857142856 2018 3.2142857142857144 2019 3.2142857142857144 2020 3.142857142857143 2021 3.142857142857143 2022 3.142857142857143 2023 3