Year	Number
1996	1.63043475151062
1998	2.17391300201416
2000	1.63043475151062
2002	2.16216206550598
2003	4.86486482620239
2004	5.97014904022217
2005	2.94117641448975
2006	2.94117641448975
2007	2.91262125968933
2008	3.39805817604065
2009	3.34928226470947
2010	5.74162673950195
2011	4.26540279388428
2012	10.4265403747559
2013	10.4265403747559
2014	11.057692527771
2015	13.8095235824585
2016	7.14285707473755
2017	7.14285707473755
2018	10.4761905670166
2019	10.4761905670166
2020	8.09523773193359
2021	8.09523773193359
2022	8.96226406097412