Year	Number
2004-01-01	44.86616314
2005-01-01	45.40548189
2006-01-01	53.14857245
2007-01-01	61.69830410
2008-01-01	69.91371066
2009-01-01	80.68467809
2010-01-01	96.40175323
2011-01-01	111.98078060
2012-01-01	129.07270100
2013-01-01	150.72097080
2014-01-01	170.31954820