Year	Number
2005	8837
2006	10820
2007	14531
2008	16698
2009	17653
2010	30845
2011	29135
2012	20690
2013	22361
2014	28676
2015	29061
2016	28255
2017	23330
2018	24883
2019	41887
2020	40724
2021	42473