Year	Number
2004-01-01	68.23295226
2005-01-01	71.49494089
2006-01-01	80.43133965
2007-01-01	86.45750312
2008-01-01	81.99050006
2009-01-01	89.92865626
2010-01-01	79.90877713
2011-01-01	81.84005702
2012-01-01	57.06907898
2013-01-01	81.10336350
2014-01-01	88.56556120