Year	years
1999	3
2000	3
2001	3
2002	3
2003	3
2004	3
2005	3
2006	3
2007	3
2008	3
2009	3
2010	3
2011	3
2012	3.5
2013	5
2014	5
2015	5
2016	5
2017	5
2018	5
2019	5
2020	5
2021	5
2022	5
2023	5