Year	Number
2004-01-01	70.4672
2005-01-01	81.4348
2006-01-01	86.6847
2007-01-01	91.3811
2008-01-01	105.5531
2009-01-01	110.4100
2010-01-01	120.5131
2011-01-01	136.1108
2012-01-01	152.6127
2013-01-01	165.5204
2014-01-01	175.3997
2015-01-01	186.9842
2016-01-01	194.6667