Year	Number
2004-01-01	19.7675
2005-01-01	29.5230
2006-01-01	41.2946
2007-01-01	48.7346
2008-01-01	68.1066
2009-01-01	77.2319
2010-01-01	87.0442
2011-01-01	93.4780
2012-01-01	102.2373
2013-01-01	111.1883
2014-01-01	121.0417
2015-01-01	124.2890
2016-01-01	125.4967