Year	Number
2004-01-01	215.7937
2005-01-01	221.0456
2006-01-01	225.6509
2007-01-01	233.6997
2008-01-01	241.0839
2009-01-01	261.2110
2010-01-01	249.2298
2011-01-01	251.5093
2012-01-01	250.1321
2013-01-01	248.8348
2014-01-01	225.0651
2015-01-01	218.9391
2016-01-01	214.8264
2017-01-01	208.0468