Year	years
1999	3
2000	3
2001	3
2002	3
2003	3
2004	3
2005	3
2006	3
2007	1
2008	1
2009	1
2010	1
2011	1
2012	1
2013	1
2014	1
2015	1
2016	1
2017	2
2018	2
2019	2
2020	2
2021	2
2022	2
2023	2