Year	1=low to 6=high
2005	3.0657894736842106
2006	2.975
2007	3.025
2008	3.025
2009	3
2010	2.9390243902439024
2011	2.9634146341463414
2012	2.9767441860465116
2013	3
2014	3.0232558139534884
2015	2.9651162790697674
2016	2.941860465116279
2017	2.8636363636363638
2018	2.883720930232558
2019	2.8181818181818183
2020	2.8181818181818183
2021	2.883720930232558
2022	2.875
2023	2.875