Year	number
2006	19575
2007	23850
2008	23544
2009	24234
2010	27483
2011	29781
2012	31531
2013	34766
2014	38306
2015	34076
2016	35020
2017	37172
2018	43050
2019	43762
2020	42402
2021	45351
2022	46617