Year	1=low to 6=high
2005	2.973684210526316
2006	2.925
2007	2.9125
2008	2.9375
2009	2.951219512195122
2010	2.9390243902439024
2011	2.9146341463414633
2012	2.86046511627907
2013	2.7954545454545454
2014	2.802325581395349
2015	2.813953488372093
2016	2.8372093023255816
2017	2.7954545454545454
2018	2.7906976744186047
2019	2.7613636363636362
2020	2.8068181818181817
2021	2.86046511627907
2022	2.8636363636363638
2023	2.897727272727273