Year	Number
1996	8.60215091705322
1998	10.1604280471802
2000	3.19148945808411
2002	0.52910053730011
2003	4.23280429840088
2004	4.92610836029053
2005	11.7073173522949
2006	10.731707572937
2007	13.1067962646484
2008	18.9320392608643
2009	16.7464122772217
2010	15.2380952835083
2011	10.4265403747559
2012	10.9004735946655
2013	9.47867298126221
2014	7.692307472229
2015	12.8571424484253
2016	13.3333330154419
2017	12.380952835083
2018	12.380952835083
2019	12.380952835083
2020	13.8095235824585
2021	14.2857141494751
2022	14.6226415634155