Year	Number
2004-01-01	513683
2005-01-01	604982
2006-01-01	793706
2007-01-01	1044010
2008-01-01	1186850
2009-01-01	1188048
2010-01-01	1036769
2011-01-01	1163171
2012-01-01	1215154
2013-01-01	1198091
2014-01-01	1057860
2015-01-01	980053
2016-01-01	972585
2017-01-01	1074774