Year	Number
2007-01-01	2.77963242787363
2008-01-01	10.72495343852130
2009-01-01	40.43293390027060
2010-01-01	69.31334996661630
2011-01-01	88.67941104122010
2012-01-01	135.13722458446100
2013-01-01	198.77358822082400
2014-01-01	217.35073971254900
2015-01-01	252.91843834557400