Year	Number of
2000	13000
2001	13000
2002	13000
2003	13000
2004	12000
2005	13000
2006	12000
2007	12000
2008	13000
2009	13000
2010	12000
2011	12000
2012	13000
2013	13000
2014	13000
2015	13000
2016	14000
2017	13000
2018	13000
2019	12000
2020	12000