Year	Number
2004-01-01	110
2005-01-01	111
2006-01-01	123
2007-01-01	127
2008-01-01	133
2009-01-01	139
2010-01-01	141
2011-01-01	149
2012-01-01	151
2013-01-01	158
2014-01-01	166
2015-01-01	171
2016-01-01	172
