Year	Number
2004	1120
2005	1312
2006	1867
2007	2441
2008	2772
2010	2080
2011	2191
2013	1876
2014	2020
2015	1323
2016	2561
2017	2941
2018	4044
2019	4331
2020	4564
2021	4662