Year	Number
2004-01-01	583684
2005-01-01	647371
2006-01-01	666194
2007-01-01	700649
2008-01-01	736259
2009-01-01	910403
2010-01-01	1027089
2011-01-01	1100213
2012-01-01	1159387
2013-01-01	1567320
2014-01-01	1638619