Year	Number
2004-01-01	341.0632
2005-01-01	350.9089
2006-01-01	361.4787
2007-01-01	371.5571
2008-01-01	387.9023
2009-01-01	394.2356
2010-01-01	472.3134
2011-01-01	527.5117
2012-01-01	560.2660
2013-01-01	599.4739
2014-01-01	627.0138
2015-01-01	681.9225
2016-01-01	724.9017