Year	Number
2004-01-01	4.877162001
2005-01-01	4.970653924
2006-01-01	4.664208175
2007-01-01	4.762894094
2008-01-01	4.233106529
2009-01-01	4.420090376
2010-01-01	6.772970446
2011-01-01	6.014647068
2012-01-01	6.113332987
2013-01-01	6.061393030
2014-01-01	6.009453072