Year	1=low to 6=high
2005	2.7567567567567566
2006	2.7837837837837838
2007	2.77027027027027
2008	2.7567567567567566
2009	2.763157894736842
2010	2.763157894736842
2011	2.776315789473684
2012	2.717948717948718
2013	2.730769230769231
2014	2.736842105263158
2015	2.763157894736842
2016	2.789473684210526
2017	2.7564102564102564
2018	2.789473684210526
2019	2.7564102564102564
2020	2.7564102564102564
2021	2.7564102564102564
2022	2.6794871794871793
2023	2.7051282051282053