Year	Number
2004-01-01	71.5457
2005-01-01	62.1679
2006-01-01	52.8480
2007-01-01	46.0056
2008-01-01	49.3241
2009-01-01	62.7248
2010-01-01	60.7677
2011-01-01	80.2840
2012-01-01	93.0551
2013-01-01	106.1157
2014-01-01	119.5526
2015-01-01	124.3234
2016-01-01	129.6491