Year	Number
2004	558643
2005	491129
2006	545469
2007	539191
2008	613742
2009	435638
2010	443733
2011	505395
2012	537610
2013	615337
2014	553922
2015	535913
2016	586535
2017	602915
2018	682965
2019	701956
2020	706523