Year	Number
2004-01-01	1790
2005-01-01	2059
2006-01-01	2538
2007-01-01	2743
2008-01-01	2603
2009-01-01	2558
2010-01-01	2523
2011-01-01	3289
2012-01-01	3256
2013-01-01	3506
2014-01-01	1658
2015-01-01	1850
2016-01-01	2115
2017-01-01	2642