Year	1=low to 6=high
2005	3.4285714285714284
2006	3.142857142857143
2007	3.4285714285714284
2008	3.4375
2009	3.375
2010	3.3125
2011	3.25
2012	3.3125
2013	3.25
2014	3.25
2015	3.1875
2016	3.142857142857143
2017	3.2142857142857144
2018	3.2857142857142856
2019	3.2857142857142856
2020	3.2857142857142856
2021	3.2857142857142856
2022	3.2857142857142856
2023	3.2857142857142856