Year	Number
1996	2.17391300201416
1998	4.34782600402832
2000	4.89130449295044
2002	4.86486482620239
2003	3.24324321746826
2004	1.99004971981049
2005	3.92156863212585
2006	7.84313726425171
2007	14.5631065368652
2008	7.76699018478394
2009	11.0047845840454
2010	16.2679424285889
2011	12.7962083816528
2012	15.1658763885498
2013	20.8530807495117
2014	20.6730766296387
2015	18.5714282989502
2016	14.2857141494751
2017	14.7619047164917
2018	13.3333330154419
2019	12.380952835083
2020	12.380952835083
2021	14.7619047164917
2022	16.5094337463379