Year	Number
2004-01-01	1012
2005-01-01	1056
2006-01-01	1146
2007-01-01	1334
2008-01-01	1471
2009-01-01	1543
2010-01-01	1571
2011-01-01	1305
2012-01-01	1323
2013-01-01	1261
2014-01-01	1283
2015-01-01	1216
2016-01-01	1181
2017-01-01	1126