Year	Number
2004-01-01	240
2005-01-01	245
2006-01-01	242
2007-01-01	240
2008-01-01	231
2009-01-01	223
2010-01-01	221
2011-01-01	220
2012-01-01	218
2013-01-01	216
2014-01-01	214
2015-01-01	211
2016-01-01	209