Year	Number
2004-01-01	20.1998
2005-01-01	23.2540
2006-01-01	23.1304
2007-01-01	26.3902
2008-01-01	38.8156
2009-01-01	40.0381
2010-01-01	106.3227
2011-01-01	54.1201
2012-01-01	59.9376
2013-01-01	69.0525
2014-01-01	78.0181
2015-01-01	94.2560
2016-01-01	97.3070
2017-01-01	111.8677