Year	Number
2004-01-01	441.8945
2005-01-01	466.8711
2006-01-01	489.1587
2007-01-01	501.1988
2008-01-01	493.6610
2009-01-01	614.9646
2010-01-01	673.7441
2011-01-01	678.5379
2012-01-01	678.3851
2013-01-01	663.8373
2014-01-01	700.5236
2015-01-01	689.4775
2016-01-01	670.1362
2017-01-01	654.5075