Year 1=low to 6=high 2005 3 2006 3 2007 3 2008 3.25 2009 3.25 2010 3.25 2011 3.25 2012 2.75 2013 3 2014 3 2015 2.75 2016 2.5 2017 2 2018 2.25 2019 2.25 2020 2.25 2021 2.25 2022 2.25 2023 2