Year	Number
2004-01-01	71.8453
2005-01-01	74.2866
2006-01-01	67.2828
2007-01-01	68.5745
2008-01-01	75.3975
2009-01-01	98.5026
2010-01-01	122.0624
2011-01-01	208.6468
2012-01-01	175.8934
2013-01-01	177.1307
2014-01-01	192.5566
2015-01-01	188.2234