Year	Number
2008-01-01	0.6788
2009-01-01	1.1659
2010-01-01	2.1463
2011-01-01	2.1127
2012-01-01	2.1313
2013-01-01	1.0670
2014-01-01	1.6087
2015-01-01	1.8758
2016-01-01	2.4003
2017-01-01	2.7620