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