Year	Number
1996	0
1998	0
2000	0
2002	0
2003	1.99004971981049
2004	1.44230771064758
2005	5.76923084259033
2006	7.692307472229
2007	9.61538505554199
2008	11.057692527771
2009	13.2701425552368
2010	13.2701425552368
2011	12.6760559082031
2012	12.6760559082031
2013	12.6760559082031
2014	9.35960578918457
2015	10.3448276519775
2016	13.3004922866821
2017	12.8078813552856
2018	13.5922327041626
2019	15.9420289993286
2020	14.9758453369141
2021	16.425121307373
2022	16.9082126617432