Year	Number
1996	6.01092910766602
1998	9.8360652923584
2000	31.1475410461426
2002	46.4864883422852
2003	31.8918914794922
2004	18.9054718017578
2005	9.80392169952393
2006	9.7560977935791
2007	6.7961163520813
2008	4.85436916351318
2009	5.74162673950195
2010	6.22009563446045
2011	5.68720388412476
2012	9.95260620117188
2013	9.00473976135254
2014	6.73076915740967
2015	8.09523773193359
2016	6.66666650772095
2017	8.09523773193359
2018	7.61904764175415
2019	7.61904764175415
2020	10.4761905670166
2021	8.09523773193359
2022	10.8490562438965