Year	Number
2004-01-01	0.8338
2005-01-01	0.9127
2006-01-01	0.9362
2007-01-01	1.0749
2008-01-01	1.1919
2009-01-01	1.3136
2010-01-01	1.3609
2011-01-01	1.8948
2012-01-01	2.9258
