Year	Number
2004-01-01	122750
2005-01-01	135724
2006-01-01	157039
2007-01-01	359839
2008-01-01	638312
2009-01-01	741009
2010-01-01	1135734
2011-01-01	221660
2012-01-01	245424
2013-01-01	260769
2014-01-01	235758
2015-01-01	247381
2016-01-01	259388
2017-01-01	274249