Year	years
1998	3
1999	3
2000	3
2001	3
2002	3
2003	2.5
2004	2.5
2005	2.5
2006	2.5
2007	2.5
2008	2.5
2009	2.5
2010	2.5
2011	2.5
2012	2.5
2013	2.5
2014	2
2015	2
2016	2
2017	2
2018	2
2019	2
2020	2
2021	2
2022	2
2023	2