Year	Number
1996	19.1489353179932
1998	26.0638294219971
2000	23.280424118042
2002	39.1534385681152
2003	30.6532669067383
2004	21.8446598052979
2005	19.4174766540527
2006	25.1207733154297
2007	22.7053146362305
2008	20.1923084259033
2009	18.9573459625244
2010	12.3222751617432
2011	1.89573454856873
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	0
2022	0