Year	Number
1996	41
1998	34.825870513916
2000	25.3731346130371
2002	15.9203977584839
2003	12.93532371521
2004	10.0961542129517
2005	8.17307662963867
2006	8.65384578704834
2007	8.65384578704834
2008	9.61538505554199
2009	9.95260620117188
2010	12.7962083816528
2011	12.6760559082031
2012	12.2065725326538
2013	14.5539903640747
2014	20.1970443725586
2015	22.1674880981445
2016	22.1674880981445
2017	21.674877166748
2018	21.8446598052979
2019	21.2560386657715
2020	23.1884059906006
2021	22.7053146362305
2022	23.1884059906006