Year	Number
1996	27.659574508667
1998	44.1489372253418
2000	47.6190490722656
2002	31.2169303894043
2003	27.6381912231445
2004	21.3592224121094
2005	26.6990299224854
2006	22.2222213745117
2007	27.0531406402588
2008	28.8461532592773
2009	25.5924167633057
2010	19.4312801361084
2011	6.63507127761841
2012	7.5829381942749
2013	7.10900497436523
2014	7.61904764175415
2015	8.09523773193359
2016	9.0476188659668
2017	9.0476188659668
2018	11.7924528121948
2019	12.2641506195068
2020	11.7924528121948
2021	14.6226415634155
2022	14.1509437561035