Year	Number
2005-01-01	5.2045
2006-01-01	9.5167
2007-01-01	14.7212
2008-01-01	19.5539
2009-01-01	22.2305
2010-01-01	23.8662
2011-01-01	24.6840
2012-01-01	26.0223
2013-01-01	26.8401
2014-01-01	26.6914
2015-01-01	28.6989
2016-01-01	29.4424
2017-01-01	30.6320