Year	1=low to 6=high
2005	3
2006	3
2007	3
2008	3
2009	2.5
2010	2.5
2011	2.5
2012	2
2013	2
2014	2
2015	2
2016	2
2017	2
2018	2.5
2019	2.5
2020	2.5
2021	2.5
2022	2.5
2023	2.5