Year	Number
2004-01-01	108
2005-01-01	104
2006-01-01	105
2007-01-01	104
2008-01-01	113
2009-01-01	114
2010-01-01	115
2011-01-01	115
2012-01-01	116
2013-01-01	118
2014-01-01	114
2015-01-01	112
2016-01-01	110