Year	Number
2004-01-01	64.3060
2005-01-01	66.1747
2006-01-01	68.7876
2007-01-01	59.9541
2008-01-01	62.7528
2009-01-01	64.3848
2010-01-01	64.6577
2011-01-01	62.8016
2012-01-01	59.8865
2013-01-01	56.6812
2014-01-01	51.9731
2015-01-01	34.4850
2016-01-01	28.7430
2017-01-01	29.3434