Year	Number
2004-01-01	3.1831
2005-01-01	3.3258
2006-01-01	3.9540
2007-01-01	4.3807
2008-01-01	7.4164
2009-01-01	8.0869
2010-01-01	10.3849
2011-01-01	10.4267
2012-01-01	14.3439