Year	1=low to 6=high
2005	3.0454545454545454
2006	2.875
2007	2.909090909090909
2008	3.0454545454545454
2009	3.0454545454545454
2010	3.090909090909091
2011	3.1923076923076925
2012	3.1785714285714284
2013	3.1
2014	3.1
2015	3.1
2016	3.0714285714285716
2017	3.0714285714285716
2018	3.0357142857142856
2019	3.107142857142857
2020	3.0714285714285716
2021	3.0357142857142856
2022	3.0714285714285716
2023	3.107142857142857