Year	Number
2004-01-01	164667
2005-01-01	136828
2006-01-01	122769
2007-01-01	110315
2008-01-01	624205
2009-01-01	756945
2010-01-01	1022147
2011-01-01	432731
2012-01-01	300950
2013-01-01	638136
2014-01-01	543249
2015-01-01	463214
2016-01-01	530612