Year	Number
2004-01-01	344
2005-01-01	334
2006-01-01	334
2007-01-01	341
2008-01-01	350
2009-01-01	375
2010-01-01	381
2011-01-01	390
2012-01-01	250
2013-01-01	281
2015-01-01	291