Year	Number
2004-01-01	834.8895
2005-01-01	856.7062
2006-01-01	891.1334
2007-01-01	967.0656
2008-01-01	1011.7592
2009-01-01	1045.7364
2010-01-01	1134.7321
2011-01-01	1218.8316
2012-01-01	1262.5372
2013-01-01	1274.6599
2014-01-01	1254.5035
2015-01-01	1244.8092