Year	1=low to 6=high
2005	3.309090909090909
2006	3.3035714285714284
2007	3.30188679245283
2008	3.30188679245283
2009	3.3518518518518516
2010	3.361111111111111
2011	3.3181818181818183
2012	3.3035714285714284
2013	3.263157894736842
2014	3.2115384615384617
2015	3.201923076923077
2016	3.2142857142857144
2017	3.2142857142857144
2018	3.204081632653061
2019	3.2
2020	3.1145833333333335
2021	3.125
2022	3.13265306122449
2023	3.1530612244897958