Year	Number
2004-01-01	454.3087
2005-01-01	497.0596
2006-01-01	597.6727
2007-01-01	756.7054
2008-01-01	921.6755
2009-01-01	1032.1756
2010-01-01	1049.8937
2011-01-01	1247.7554
2012-01-01	1308.2371
2013-01-01	1358.6140
2014-01-01	1345.4979
2015-01-01	1269.3756
2016-01-01	1376.7508