Year	Number
2004-01-01	7.3953
2005-01-01	8.6888
2006-01-01	10.4363
2007-01-01	23.7076
2008-01-01	188.5361
2009-01-01	217.0005
2010-01-01	267.6308
2011-01-01	170.5139
2012-01-01	209.5442
2013-01-01	213.1619
2014-01-01	166.6784
2015-01-01	145.2134
2016-01-01	188.3306
2017-01-01	208.8366