Year	Number
1996	38.8297882080078
1998	26.0638294219971
2000	32.2751312255859
2002	20.6349201202393
2003	23.1155776977539
2004	17.9611644744873
2005	19.9029121398926
2006	10.1449279785156
2007	9.17874431610107
2008	9.13461494445801
2009	11.3744077682495
2010	13.2701425552368
2011	19.4312801361084
2012	24.6445503234863
2013	23.222749710083
2014	9.0476188659668
2015	23.8095245361328
2016	15.2380952835083
2017	16.1904754638672
2018	12.2641506195068
2019	14.6226415634155
2020	17.4528293609619
2021	16.0377349853516
2022	13.2075471878052