Year	Number
2004-01-01	1069
2005-01-01	1021
2006-01-01	989
2007-01-01	899
2008-01-01	913
2009-01-01	869
2010-01-01	790
2011-01-01	748
2012-01-01	667
2013-01-01	579
2014-01-01	504
2015-01-01	452
2016-01-01	414