Year	Number
1996	34.5744667053223
1998	35.638298034668
2000	43.3862419128418
2002	41.2698402404785
2003	43.2160797119141
2004	48.5436897277832
2005	55.3398056030273
2006	51.2077293395996
2007	44.9275360107422
2008	38.9423065185547
2009	41.7061614990234
2010	33.1753540039063
2011	38.3886260986328
2012	38.3886260986328
2013	40.7582931518555
2014	20.9523811340332
2015	22.380952835083
2016	20.9523811340332
2017	19.5238094329834
2018	13.2075471878052
2019	11.7924528121948
2020	12.7358493804932
2021	15.0943393707275
2022	14.1509437561035