Year	Number
2007-01-01	39.9496
2008-01-01	38.9102
2009-01-01	36.7608
2010-01-01	36.1336
2011-01-01	35.4113
2012-01-01	35.0259
2013-01-01	34.0018
2014-01-01	33.4124
2015-01-01	29.6569
2016-01-01	29.5778