Year	1=low to 6=high
2005	3.152173913043478
2006	3.14
2007	3.12
2008	3.1
2009	3.1153846153846154
2010	3.1346153846153846
2011	3.1607142857142856
2012	3.1166666666666667
2013	3.096774193548387
2014	3.129032258064516
2015	3.1451612903225805
2016	3.1451612903225805
2017	3.109375
2018	3.0806451612903225
2019	3
2020	3
2021	2.9193548387096775
2022	2.875
2023	2.859375