Year	Number
2004-01-01	302.6454
2005-01-01	326.2303
2006-01-01	338.8985
2007-01-01	388.9826
2008-01-01	420.7867
2009-01-01	449.8451
2010-01-01	469.7872
2011-01-01	498.2859
2012-01-01	543.6293
2013-01-01	559.6827
2014-01-01	421.8998
2015-01-01	408.2941
2016-01-01	401.7967