Year	number
2005	40.28125
2006	40
2007	40.125
2008	40.09375
2009	39.63636363636363
2010	39.303030303030305
2011	39.06060606060606
2012	35.138888888888886
2013	35.270270270270274
2014	34.62162162162162
2015	34.45945945945946
2016	33.891891891891895
2017	33.91891891891892
2018	34.08108108108108
2019	35