Year	Number
1996	57.4468078613281
1998	39.361701965332
2000	40.2116394042969
2002	37.5661392211914
2003	36.6834182739258
2004	35.9223289489746
2005	36.4077682495117
2006	26.57004737854
2007	27.0531406402588
2008	28.365385055542
2009	14.2180099487305
2010	12.3222751617432
2011	16.1137447357178
2012	18.0094795227051
2013	19.4312801361084
2014	26.6666660308838
2015	25.7142848968506
2016	27.619047164917
2017	25.7142848968506
2018	13.6792449951172
2019	10.3773584365845
2020	10.3773584365845
2021	11.3207550048828
2022	12.2641506195068