Year	Number
2005-01-01	4.2958
2006-01-01	4.5492
2007-01-01	11.0502
2008-01-01	14.9327
2009-01-01	12.1554
2010-01-01	25.1806
2011-01-01	31.2787
2012-01-01	33.3561
