Year	Number
1996	9336
1997	7785
2000	1188
2001	1762
2009	1580
2010	1240
2011	2210
2012	3380
2013	3877
2014	3853
2015	4564
2016	6294
2017	8556
2018	10483
2019	13632
2020	16936
2021	18731