Year	Number
1996	12.021858215332
1998	13.1147537231445
2000	9.28961753845215
2002	4.86486482620239
2003	3.78378367424011
2004	2.48756217956543
2005	2.45098042488098
2006	2.43902444839478
2007	4.85436916351318
2008	4.36893224716187
2009	5.26315784454346
2010	3.34928226470947
2011	3.79146909713745
2012	12.3222751617432
2013	12.7962083816528
2014	32.211540222168
2015	31.9047622680664
2016	18.5714282989502
2017	14.2857141494751
2018	13.3333330154419
2019	14.2857141494751
2020	13.8095235824585
2021	14.2857141494751
2022	12.2641506195068