Year	Number
2004-01-01	354.4662
2005-01-01	375.4409
2006-01-01	386.7275
2007-01-01	378.6856
2008-01-01	400.9665
2009-01-01	414.1829
2010-01-01	478.8981
2011-01-01	537.4477
2012-01-01	486.6420
2013-01-01	518.7477
2014-01-01	527.9653
2015-01-01	556.2336
2016-01-01	577.0919