Year	Number
1996	4.25531911849976
1998	12.2340421676636
2000	0
2002	1.05820107460022
2003	10.5527639389038
2004	5.82524251937866
2005	6.31067943572998
2006	0.483091801404953
2007	0
2008	0.961538434028625
2009	1.42180097103119
2010	3.3175356388092
2011	4.26540279388428
2012	6.16113758087158
2013	7.5829381942749
2014	8.5714282989502
2015	21.9047622680664
2016	20.4761905670166
2017	13.3333330154419
2018	11.3207550048828
2019	11.7924528121948
2020	12.7358493804932
2021	10.3773584365845
2022	12.2641506195068