Year	Number
2005-01-01	34
2006-01-01	37
2007-01-01	39
2008-01-01	40
2009-01-01	34
2010-01-01	29
2011-01-01	26
2012-01-01	26
2013-01-01	26
2014-01-01	26
2015-01-01	26