Year	Number
1999	9753
2000	10766
2001	10501
2002	13315
2003	12022
2004	14049
2005	15789
2006	11806
2007	12752
2008	13448
2009	14136
2010	14491
2011	16042
2012	17375
2013	18242
2014	18620
2015	18759
2016	19267
2017	19298
2018	19964
2019	21621
2020	23458
2021	23601
2022	24178