Year	Number
2004-01-01	1978
2005-01-01	2153
2006-01-01	2617
2007-01-01	3205
2008-01-01	3992
2009-01-01	4779
2010-01-01	5507
2011-01-01	6530
2012-01-01	8162
2013-01-01	8898
2014-01-01	12226
2015-01-01	26976
2016-01-01	24956
2017-01-01	24892