Year	Number
2004	3206
2005	3638
2006	4163
2007	4512
2010	1907
2011	2298
2012	2286
2013	2113
2014	2553
2015	2725
2016	3013
2017	3085
2018	2981
2019	2730
2020	2753
2021	3242