Year	number
2003	7.75
2004	7
2005	7
2006	7
2007	6.8
2008	6.8
2009	7
2010	7
2011	7
2012	7
2013	8.80875
2014	8.8675
2015	8.6175
2016	8.4925
2017	8.43375
2018	7.75
2019	7.125