Year	Number
2004-01-01	0.8923
2005-01-01	1.1980
2006-01-01	1.9133
2007-01-01	13.5810
2008-01-01	16.8635
2009-01-01	20.1971
2010-01-01	31.4788
2011-01-01	57.6481
2012-01-01	62.5144
2013-01-01	78.7852
2014-01-01	69.1011