Year	1=low to 6=high
2005	2
2006	2
2007	2
2008	2
2009	2
2010	2
2011	2
2012	1.5
2013	1.5
2014	1.5
2015	1.5
2016	1.5
2017	2
2018	2
2019	2
2020	2
2021	2
2022	2
2023	2