Year	Number
2004-01-01	1139
2005-01-01	1225
2006-01-01	1334
2007-01-01	1431
2008-01-01	1484
2009-01-01	1458
2010-01-01	1384
2011-01-01	1353
2012-01-01	1318
2013-01-01	1257
2014-01-01	1259
2015-01-01	1229
2016-01-01	1189