Year	Number
2004-01-01	139.4089
2005-01-01	154.1872
2006-01-01	160.5911
2007-01-01	181.2808
2008-01-01	179.3103
2009-01-01	188.1773
2010-01-01	196.5517
2011-01-01	210.8374
2012-01-01	217.2414
2013-01-01	221.6749
2014-01-01	224.1379
2015-01-01	228.5714
2016-01-01	224.6305