Year	Number
2004-01-01	9.4212
2005-01-01	13.3787
2006-01-01	19.0736
2007-01-01	13.8160
2008-01-01	52.3999
2009-01-01	33.7840
2010-01-01	23.8972
2011-01-01	38.6968
2012-01-01	31.0278
2013-01-01	32.1033
2014-01-01	44.5007
2015-01-01	42.2920
2016-01-01	48.6613