Year	Number
2004-01-01	145538
2005-01-01	434529
2006-01-01	661975
2007-01-01	791270
2008-01-01	933643
2009-01-01	996028
2010-01-01	1073682
2011-01-01	1018884
2012-01-01	1017012
2013-01-01	1058074
2014-01-01	1126338
2015-01-01	1191177
2016-01-01	1279016