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