Year	Number of
2000	1
2001	1
2002	1
2003	1
2004	3
2005	2
2006	1
2007	2
2008	2
2009	3
2010	2
2011	2
2012	2
2013	2
2014	2
2015	3
2016	2
2017	3
2018	2
2019	2
2020	2