Year	Number
2004-01-01	293
2005-01-01	313
2006-01-01	236
2007-01-01	253
2008-01-01	274
2009-01-01	299
2010-01-01	319
2011-01-01	327
2012-01-01	350
2013-01-01	319
2014-01-01	333
2015-01-01	410
2016-01-01	420