Year	Number
2000	1100
2001	1100
2002	1000
2003	980
2004	1100
2005	960
2006	910
2007	970
2008	1000
2009	1100
2010	1100
2011	1200
2012	1000
2013	1100
2014	1000
2015	1100
2016	1100
2017	950
2018	970
2019	950
2020	950