Year	Number
1996	3.82513666152954
1998	3.82513666152954
2000	2.7322404384613
2002	3.24324321746826
2003	0.540540516376495
2004	3.48258709907532
2005	2.94117641448975
2006	0.97560977935791
2007	0.485436886548996
2008	0.485436886548996
2009	8.61244010925293
2010	19.6172256469727
2011	12.3222751617432
2012	9.95260620117188
2013	10.9004735946655
2014	15.384614944458
2015	13.8095235824585
2016	10
2017	15.7142858505249
2018	8.09523773193359
2019	9.0476188659668
2020	10
2021	8.09523773193359
2022	6.60377359390259