Year	Number
2004-01-01	11051
2005-01-01	13124
2006-01-01	17938
2007-01-01	17008
2008-01-01	18917
2009-01-01	21822
2010-01-01	31456
2011-01-01	35399
2012-01-01	61395
2013-01-01	65174
2014-01-01	75782
2015-01-01	85125