Year	Number
2004-01-01	177.9901
2005-01-01	200.2593
2006-01-01	185.1030
2007-01-01	170.9785
2008-01-01	156.6679
2009-01-01	150.5785
2010-01-01	150.1479
2011-01-01	182.8903
2012-01-01	130.5156
2013-01-01	118.4783
2014-01-01	107.5393
2015-01-01	108.7727
2016-01-01	123.9661