Year	Number
1999	19624
2000	14525
2001	16897
2002	14925
2003	15514
2004	16438
2005	21650
2006	25279
2007	28579
2008	25428
2009	23119
2010	20081
2011	20826
2012	15410
2013	17340
2014	13152
2015	13200
2016	11556
2017	6905
2018	9124
2019	11312
2020	13933
2021	19707
2022	25046