Year	Number
2002	1437
2003	1500
2004	4741
2005	8617
2006	10000
2007	14200
2008	15550
2009	15983
2010	15250
2011	13595
2012	14416
2013	15016
2014	15610
2015	15696
2016	15935
2017	16253
2018	16712
2019	17173
2020	18050
2021	18554
2022	19189