Year	Number
2006-01-01	175.8681
2007-01-01	198.4578
2008-01-01	206.2002
2009-01-01	209.7200
2010-01-01	231.5324
2011-01-01	246.3098
2012-01-01	258.4537
2013-01-01	295.6177
2014-01-01	337.4437
2015-01-01	412.8875
2016-01-01	427.7121