Year	Number
2004-01-01	42.49640937
2005-01-01	41.12501885
2006-01-01	38.14804994
2007-01-01	32.37767742
2008-01-01	30.10710096
2009-01-01	30.31939947
2010-01-01	32.35546371
2011-01-01	34.45637536
2012-01-01	35.87107237
2013-01-01	71.92037910
2014-01-01	41.25934490