Year	Number
1996	12.3655910491943
1998	23.529411315918
2000	20.7446804046631
2002	22.2222213745117
2003	8.99470901489258
2004	11.3300495147705
2005	13.1707315444946
2006	8.29268264770508
2007	14.5631065368652
2008	17.9611644744873
2009	11.4832534790039
2010	10
2011	9.95260620117188
2012	13.2701425552368
2013	12.3222751617432
2014	13.4615383148193
2015	13.3333330154419
2016	11.9047622680664
2017	10.9523811340332
2018	9.0476188659668
2019	9.5238094329834
2020	8.09523773193359
2021	6.66666650772095
2022	7.07547187805176