Year	number
2006	419318
2007	403914
2008	415693
2009	257170
2010	258327
2011	157281
2012	397952
2013	398782
2014	427388
2015	456046
2016	433464
2017	390299
2018	317475
2019	281834
2020	214895
2021	221776
2022	240458