Year	Number
2004-01-01	47.5410
2005-01-01	47.5410
2006-01-01	47.5410
2007-01-01	47.5410
2008-01-01	47.5410
2009-01-01	47.5410
2010-01-01	47.5410
2011-01-01	47.5410
2012-01-01	47.5410
2013-01-01	47.5410
2014-01-01	47.5410
2015-01-01	45.9016
2016-01-01	37.7049
2017-01-01	37.7049