Year	number
2006	31849
2007	34720
2008	31324
2009	28381
2010	28501
2011	31896
2012	27803
2013	32081
2014	31860
2015	34120
2016	33651
2017	37571
2018	43114
2019	46880
2020	36076
2021	39896
2022	46119