Year	1=low to 6=high
2005	3
2006	3
2007	3
2008	2.75
2009	2.75
2010	2.75
2011	3
2012	2.5
2013	2.5
2014	2.5
2015	2.5
2016	2.5
2017	2.25
2018	2.25
2019	2.25
2020	2.25
2021	2.25
2022	2.25
2023	2.25