Year	Number
2004-01-01	56
2005-01-01	67
2006-01-01	87
2007-01-01	90
2008-01-01	101
2009-01-01	101
2010-01-01	102
2011-01-01	106
2012-01-01	103
2013-01-01	105
2014-01-01	106
2015-01-01	107
2016-01-01	107
2017-01-01	99