Year	Number
2004-01-01	145.5052
2005-01-01	160.5208
2006-01-01	174.6853
2007-01-01	195.0344
2008-01-01	198.5694
2009-01-01	181.8536
2010-01-01	180.4368
2011-01-01	171.3088
2012-01-01	184.1227
2013-01-01	192.1442
2014-01-01	205.3684
2015-01-01	206.6837
2016-01-01	215.4025