Year	Number
2004-01-01	29769.000
2005-01-01	45191.000
2006-01-01	50940.000
2007-01-01	104048.000
2008-01-01	116975.000
2009-01-01	152001.000
2010-01-01	177634.000
2011-01-01	212193.000
2012-01-01	259523.000
2013-01-01	277885.000
2014-01-01	393094.001
2015-01-01	459979.000