Year	Number
2004-01-01	660518
2005-01-01	860992
2006-01-01	939696
2007-01-01	663970
2008-01-01	778133
2009-01-01	1017400
2010-01-01	1139265
2011-01-01	1165109
2012-01-01	1395109
2013-01-01	1308120
2014-01-01	1764556
2015-01-01	1793145