Year	Number
2004-01-01	2.9699
2005-01-01	3.6890
2006-01-01	3.1545
2007-01-01	3.8051
2008-01-01	1.8618
2009-01-01	7.3070
2010-01-01	12.7164
2011-01-01	17.4442
2012-01-01	59.1226
2013-01-01	63.0726
2014-01-01	65.2833
2015-01-01	63.4817
2016-01-01	238.7761