Year	Number
2004-01-01	1.947818638
2005-01-01	2.894873785
2006-01-01	3.538889370
2007-01-01	3.881546083
2008-01-01	4.144495062
2009-01-01	5.452527559
2010-01-01	5.305922842
2011-01-01	10.741555450
2012-01-01	11.825724770
2013-01-01	8.645679235
2014-01-01	12.995887470