Year 1=low to 6=high 2005 3.25 2006 3.088235294117647 2007 3.176470588235294 2008 3.2058823529411766 2009 3.264705882352941 2010 3.323529411764706 2011 3.236842105263158 2012 3.2 2013 3.175 2014 3.05 2015 3.025 2016 3.05 2017 3.05 2018 3.05 2019 3.075 2020 2.9761904761904763 2021 3 2022 2.9761904761904763 2023 3