Year	Number
2004-01-01	22933
2005-01-01	58336
2006-01-01	93701
2007-01-01	152828
2008-01-01	172287
2009-01-01	119154
2010-01-01	104830
2011-01-01	103938
2012-01-01	115531
2013-01-01	124512
2014-01-01	136918
2015-01-01	135895
2016-01-01	112515
2017-01-01	182320