Year	Number
2004-01-01	7.3953
2005-01-01	8.6888
2006-01-01	10.4363
2007-01-01	23.7076
2008-01-01	188.5361
2009-01-01	217.0005
2010-01-01	267.6308
2011-01-01	290.3070
2012-01-01	332.6096
2013-01-01	303.4812
2014-01-01	242.7873
2015-01-01	198.8275
2016-01-01	235.4251
2017-01-01	241.5855