Year	Number
2001	24.95268
2002	26.18003
2003	36.04318
2008	24.66365
2010	19.74421
2011	23.04021
2012	28.16317
2013	30.42163
2014	28.63492
2015	24.6392
2016	25.16764
2017	26.78763
2018	26.02515