Year	Number
2000	38000
2001	35000
2002	34000
2003	31000
2004	33000
2005	32000
2006	30000
2007	30000
2008	29000
2009	28000
2010	26000
2011	27000
2012	25000
2013	23000
2014	22000
2015	21000
2016	21000
2017	20000
2018	19000
2019	17000
2020	17000