Year	Number
2004-01-01	7779.5638
2005-01-01	7623.8921
2006-01-01	7375.4792
2007-01-01	7078.8004
2008-01-01	6979.7759
2009-01-01	6931.4509
2010-01-01	6917.6184
2011-01-01	6952.8639
2012-01-01	7048.0224
2013-01-01	7079.0153
2014-01-01	7059.8122
2015-01-01	7021.2685
2016-01-01	6999.6055
2017-01-01	7063.0121