Year	Number
2004-01-01	946
2005-01-01	958
2006-01-01	968
2007-01-01	989
2008-01-01	1029
2009-01-01	1049
2010-01-01	1174
2011-01-01	1211
2012-01-01	1232
2013-01-01	1233
2014-01-01	1218
2015-01-01	1195
2016-01-01	1146