Year	1=low to 6=high
2005	3.6875
2006	3.6176470588235294
2007	3.5294117647058822
2008	3.5294117647058822
2009	3.5294117647058822
2010	3.4705882352941178
2011	3.3684210526315788
2012	3.325
2013	3.325
2014	3.275
2015	3.275
2016	3.25
2017	3.275
2018	3.275
2019	3.325
2020	3.4047619047619047
2021	3.380952380952381
2022	3.4047619047619047
2023	3.4047619047619047