Year	Number
2004	249849
2005	274054
2006	290457
2007	324610
2008	308837
2009	279978
2010	365327
2011	392694
2012	407047
2013	418161
2014	441354
2015	471640
2016	470046
2017	532000
2018	552200
2019	552053
2020	611937