Year	Number
1996	14.361701965332
1998	7.44680833816528
2000	17.9894180297852
2002	19.0476188659668
2003	9.04522609710693
2004	18.9320392608643
2005	7.76699018478394
2006	22.2222213745117
2007	25.1207733154297
2008	36.0576934814453
2009	44.5497627258301
2010	37.9146919250488
2011	37.9146919250488
2012	37.9146919250488
2013	27.488151550293
2014	10.4761905670166
2015	20.4761905670166
2016	13.8095235824585
2017	11.9047622680664
2018	28.7735843658447
2019	19.8113212585449
2020	16.9811325073242
2021	16.0377349853516
2022	16.0377349853516