Year	Number
1996	13.297872543335
1998	11.1702127456665
2000	11.1111106872559
2002	20.1058197021484
2003	36.1809043884277
2004	25.2427177429199
2005	28.6407775878906
2006	25.1207733154297
2007	34.7826080322266
2008	29.8076915740967
2009	37.9146919250488
2010	33.1753540039063
2011	30.3317527770996
2012	39.3364944458008
2013	36.4928894042969
2014	24.2857151031494
2015	25.7142848968506
2016	13.8095235824585
2017	13.8095235824585
2018	18.3962268829346
2019	18.8679237365723
2020	12.2641506195068
2021	11.3207550048828
2022	12.2641506195068