Year	Number
1996	20.4301071166992
1998	24.0641708374023
2000	24.4680843353271
2002	21.6931209564209
2003	20.6349201202393
2004	19.7044334411621
2005	17.5609760284424
2006	14.1463413238525
2007	14.5631065368652
2008	17.9611644744873
2009	8.61244010925293
2010	5.7142858505249
2011	7.5829381942749
2012	3.3175356388092
2013	1.42180097103119
2014	2.88461542129517
2015	0.952380955219269
2016	2.85714292526245
2017	3.33333325386047
2018	3.33333325386047
2019	2.38095235824585
2020	2.85714292526245
2021	3.80952382087708
2022	3.77358484268188