Year	Number
2004-01-01	684
2005-01-01	732
2006-01-01	832
2007-01-01	981
2008-01-01	1080
2009-01-01	1044
2010-01-01	1070
2011-01-01	1310
2012-01-01	1382
2013-01-01	1455
2014-01-01	1486
2015-01-01	1482
2016-01-01	1492