Year	Number
2006	7458
2007	11700
2008	15942
2009	15000
2010	15000
2011	15817
2012	20512
2013	22282
2014	87750
2015	153571
2016	84724
2017	96919
2018	109561
2019	119068
2020	121516
2021	134996
2022	137800