Year	Number
2007-01-01	793
2008-01-01	858
2009-01-01	970
2010-01-01	1026
2011-01-01	1185
2012-01-01	1364
2013-01-01	1537
2014-01-01	1721
2015-01-01	1938
2016-01-01	2024
2017-01-01	2103
