Year	Number
2006-01-01	1.1330
2007-01-01	1.5182
2008-01-01	1.6145
2009-01-01	2.0904
2010-01-01	2.2264
2011-01-01	2.3623
2012-01-01	2.5380
2013-01-01	2.7589
2014-01-01	3.3594
2015-01-01	3.6823