Year	1=low to 6=high
2005	2.9126984126984126
2006	2.8692307692307693
2007	2.8692307692307693
2008	2.8615384615384616
2009	2.873134328358209
2010	2.873134328358209
2011	2.898550724637681
2012	2.8732394366197185
2013	2.8541666666666665
2014	2.8472222222222223
2015	2.875
2016	2.880281690140845
2017	2.8541666666666665
2018	2.8732394366197185
2019	2.8767123287671232
2020	2.863013698630137
2021	2.875
2022	2.8175675675675675
2023	2.831081081081081