Year	Number
2004	793
2005	1269
2006	2065
2007	42500
2008	44625
2010	13500
2011	17430
2012	24789
2013	25707
2014	20661
2015	28093
2016	26376
2017	30549
2018	31352
2019	32762
2020	28782
2021	30426
2022	29847