Year	number
2006	22008
2007	27335
2008	43598
2009	42046
2010	44269
2011	52217
2012	32311
2013	28207
2014	24629
2015	21256
2016	22522
2017	22926
2018	24467
2019	25571
2020	25753
2021	30794
2022	27399