Year	1=low to 6=high
2005	2.5
2006	2.5
2007	2.5
2008	2.5
2009	1.5
2010	1.5
2011	1.5
2012	1.5
2013	1
2014	1
2015	1
2016	1
2017	1
2018	1
2019	1.5
2020	1.5
2021	1.5
2022	1.5
2023	1.5