Year	Number
2004-01-01	1291.0281
2005-01-01	1277.1182
2006-01-01	1391.1110
2007-01-01	1469.4142
2008-01-01	1530.0769
2009-01-01	1583.5012
2010-01-01	1647.4048
2011-01-01	1653.5081
2012-01-01	1664.6036
2013-01-01	1673.4613
2014-01-01	1648.9624
2015-01-01	1631.1234
2016-01-01	1530.8438
2017-01-01	1478.4704