Year	Number
2004-01-01	368
2005-01-01	665
2006-01-01	810
2007-01-01	959
2008-01-01	977
2009-01-01	503
2010-01-01	578
2011-01-01	875
2012-01-01	1373
2013-01-01	1624
2014-01-01	3596
2015-01-01	5548
2016-01-01	7557