Year	1=low to 6=high
2005	3.423076923076923
2006	3.3076923076923075
2007	3.5
2008	3.6
2009	3.6
2010	3.6
2011	3.4444444444444446
2012	3.4444444444444446
2013	3.5
2014	3.25
2015	3.25
2016	3.5
2017	3.75
2018	3.75
2019	3.75