Year	Number
2004-01-01	206.7773
2005-01-01	236.9305
2006-01-01	270.8435
2007-01-01	299.5216
2008-01-01	325.0104
2009-01-01	345.5174
2010-01-01	332.5700
2011-01-01	330.5581
2012-01-01	325.8895
2013-01-01	299.4892
2014-01-01	215.0865
2015-01-01	261.9410