Year	years
1997	11
1998	11
1999	11
2000	11
2001	11
2002	11
2003	11
2004	11
2005	11
2006	11
2007	11
2008	11
2009	11
2010	11
2011	12
2012	12
2013	12
2014	12
2015	12
2016	12
2017	12
2018	12
2019	12
2020	12
2021	12
2022	12
2023	12