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