Year	Number
1976	194
1977	216
2000	1152
2001	1015
2002	1188
2003	1358
2004	1540
2005	1624
2006	1808
2007	3087
2009	4277
2011	5704
2012	6399
2013	7282
2014	7920
2015	8886
2016	9352
2017	9392
2021	9082
2022	9566