Year	Number
2004-01-01	7.1890
2005-01-01	18.8517
2006-01-01	20.2153
2007-01-01	24.6053
2008-01-01	29.3421
2009-01-01	43.0502
2010-01-01	44.9522
2011-01-01	49.9043
2012-01-01	53.7321
2013-01-01	55.7895
2014-01-01	57.9785
2015-01-01	61.2321
2016-01-01	62.7153