Year	Number
2004	193300
2005	189800
2006	220100
2007	226800
2008	231500
2009	182300
2010	212800
2011	227500
2012	244400
2013	273500
2014	285000
2015	287400
2016	322800
2017	336200
2018	369900
2019	375900
2020	346000