Year	Number
2003	1
2004	2
2005	2
2006	2
2007	2
2008	2
2009	1
2010	2
2011	2
2012	2
2013	2
2014	2
2015	3
2016	3
2017	3
2018	3
2019	3
2020	3
2021	3
2022	3