Year	Number
1996	14
1998	11.9402980804443
2000	12.93532371521
2002	10.945273399353
2003	9.95024871826172
2004	16.3461532592773
2005	13.4615383148193
2006	8.65384578704834
2007	10.0961542129517
2008	9.13461494445801
2009	9.95260620117188
2010	9.95260620117188
2011	11.7370891571045
2012	20.1877937316895
2013	14.5539903640747
2014	8.86699485778809
2015	9.85221672058105
2016	9.85221672058105
2017	8.86699485778809
2018	6.7961163520813
2019	6.28019332885742
2020	4.34782600402832
2021	2.89855074882507
2022	4.8309178352356