Year	Number
2004-01-01	0.0784
2005-01-01	0.0784
2006-01-01	0.0801
2007-01-01	0.0813
2008-01-01	0.0841
2009-01-01	0.0875
2010-01-01	0.0870
2011-01-01	0.0881
2012-01-01	0.0978