Year	Number
2007-01-01	7.41754475330146
2008-01-01	27.85338260485980
2009-01-01	102.19346921914700
2010-01-01	170.44618888215100
2011-01-01	212.00891839620400
2012-01-01	313.98970021356500
2013-01-01	448.68871882018900
2014-01-01	476.42707921195700
2015-01-01	538.09472614385400