Year	Number
2004-01-01	209
2005-01-01	249
2006-01-01	377
2007-01-01	431
2008-01-01	514
2009-01-01	587
2010-01-01	733
2011-01-01	853
2012-01-01	950
2013-01-01	1078
2014-01-01	1319
2015-01-01	1576
2016-01-01	1678
2017-01-01	1463