Year	Number
1996	2.5
1998	11.4427862167358
2000	10.4477615356445
2002	6.46766185760498
2003	3.98009943962097
2004	5.76923084259033
2005	25
2006	34.1346168518066
2007	35.5769233703613
2008	34.1346168518066
2009	35.5450248718262
2010	34.5971565246582
2011	32.3943672180176
2012	31.9248828887939
2013	29.1079807281494
2014	32.019702911377
2015	31.0344829559326
2016	35.9605903625488
2017	41.3793106079102
2018	37.3786392211914
2019	36.2318840026855
2020	37.1980667114258
2021	38.6473426818848
2022	38.6473426818848