Year	Number
1996	4.89130449295044
1998	8.15217399597168
2000	9.78260898590088
2002	5.94594573974609
2003	8.64864826202393
2004	16.4179096221924
2005	11.764705657959
2006	14.2156858444214
2007	15.5339803695679
2008	16.5048542022705
2009	15.3110046386719
2010	18.1818180084229
2011	13.2701425552368
2012	9.95260620117188
2013	9.47867298126221
2014	9.61538505554199
2015	10
2016	12.380952835083
2017	10.4761905670166
2018	11.4285717010498
2019	10.4761905670166
2020	10.9523811340332
2021	9.5238094329834
2022	11.3207550048828