Year	Number
1998	3980
1999	3116
2002	2280
2003	3645
2004	4431
2005	5371
2006	6871
2007	6467
2008	9576
2009	8874
2010	6979
2012	7043
2013	6445
2014	4572
2015	2254
2017	2568
2018	2745
2019	5364
2020	4909
2021	5359
2022	5805