Year	Number
2004-01-01	56.0024
2005-01-01	56.9623
2006-01-01	57.1422
2007-01-01	58.2939
2008-01-01	57.4952
2009-01-01	52.8873
2010-01-01	49.6250
2011-01-01	53.7028
2012-01-01	59.3430