Year	Number
1996	4.9180326461792
1998	6.01092910766602
2000	17.4863395690918
2002	12.4324321746826
2003	8.64864826202393
2004	4.47761201858521
2005	5.88235282897949
2006	11.7073173522949
2007	14.5631065368652
2008	14.0776700973511
2009	14.3540668487549
2010	13.8755979537964
2011	13.7440757751465
2012	7.5829381942749
2013	5.21327018737793
2014	3.36538457870483
2015	3.33333325386047
2016	3.80952382087708
2017	1.90476191043854
2018	6.66666650772095
2019	6.1904764175415
2020	7.14285707473755
2021	7.14285707473755
2022	6.60377359390259