Year	Number
2004-01-01	0.8781
2005-01-01	0.9695
2006-01-01	0.9456
2007-01-01	0.9218
2008-01-01	1.6703
2009-01-01	1.8586
2010-01-01	3.9868
2011-01-01	4.3360
2012-01-01	6.6623
2013-01-01	7.9924
2014-01-01	8.4595
2015-01-01	10.4138
2016-01-01	21.5977