Year	1=low to 6=high
2005	3.027027027027027
2006	3
2007	3.1216216216216215
2008	3.175675675675676
2009	3.1578947368421053
2010	3.1973684210526314
2011	3.25
2012	3.2564102564102564
2013	3.282051282051282
2014	3.3421052631578947
2015	3.289473684210526
2016	3.210526315789474
2017	3.076923076923077
2018	3.0657894736842106
2019	3.051282051282051
2020	3.076923076923077
2021	3.051282051282051
2022	3.08974358974359
2023	3.0641025641025643