Year	Number
2004-01-01	7.0755
2005-01-01	11.2156
2006-01-01	22.3904
2007-01-01	29.9447
2008-01-01	41.1341
2009-01-01	53.7321
2010-01-01	41.7836
2011-01-01	55.1480
2012-01-01	66.4051
2013-01-01	56.2122
2014-01-01	70.4743
2015-01-01	88.8671