Year	Number
1996	12
1998	14.4278602600098
2000	11.9402980804443
2002	10.945273399353
2003	9.95024871826172
2004	8.17307662963867
2005	10.5769233703613
2006	8.65384578704834
2007	9.61538505554199
2008	12.5
2009	11.8483409881592
2010	10.9004735946655
2011	11.7370891571045
2012	8.92018795013428
2013	8.92018795013428
2014	8.86699485778809
2015	9.85221672058105
2016	9.35960578918457
2017	8.86699485778809
2018	10.6796112060547
2019	10.1449279785156
2020	11.1111106872559
2021	12.5603866577148
2022	14.0096616744995