Year	Number
2005-01-01	21.9629
2006-01-01	23.9799
2007-01-01	25.5495
2008-01-01	26.7134
2009-01-01	26.9277
2010-01-01	37.6670
2011-01-01	41.0158
2012-01-01	41.6147
2013-01-01	43.5236
2014-01-01	43.9789
2015-01-01	46.6167