Year	Number
2004-01-01	22.30020278
2005-01-01	27.16290076
2006-01-01	26.85587854
2007-01-01	33.00209955
2009-01-01	40.91929564
2010-01-01	54.09835173
2011-01-01	49.94701185
2012-01-01	51.62324483