Year	1=low to 6=high
2005	3.1203703703703702
2006	3.1592592592592594
2007	3.1759259259259256
2008	3.0944444444444446
2009	3.138888888888889
2010	3.1111111111111116
2011	3.1296296296296298
2012	3.0877192982456134
2013	3.12280701754386
2014	3.1666668518518515
2015	3.1574079629629628
2016	3.1111111111111125
2017	3.043859649122807
2018	3.111111111111111
2019	3.017543859649122
2020	3.0175438596491224
2021	3.0526315789473686
2022	3.043859684210526
2023	3.0614035789473677