Year	Number
2004-01-01	294
2005-01-01	337
2006-01-01	368
2007-01-01	441
2008-01-01	502
2009-01-01	582
2010-01-01	681
2011-01-01	731
2012-01-01	773
2013-01-01	807
2014-01-01	857
2015-01-01	938