Year	Number
2004-01-01	35.0504
2005-01-01	39.8387
2006-01-01	38.8947
2007-01-01	40.0242
2008-01-01	40.5643
2009-01-01	43.8096
2010-01-01	43.7293
2011-01-01	36.7885
2012-01-01	35.4384
2013-01-01	34.2342
2014-01-01	48.7446
2015-01-01	72.1239
2016-01-01	81.9846
2017-01-01	81.9818