Year	Number
2007-01-01	441484
2008-01-01	1553644
2009-01-01	1969235
2010-01-01	1626975
2011-01-01	1187466
2012-01-01	1037635
2013-01-01	523685
2014-01-01	411083
2015-01-01	309633
2016-01-01	442553
2017-01-01	439931