Year	Number
2004-01-01	570.3919
2005-01-01	576.1974
2006-01-01	574.9280
2007-01-01	578.4173
2008-01-01	582.8571
2009-01-01	600.0000
2010-01-01	611.1111
2011-01-01	609.3750
2012-01-01	613.3144
2013-01-01	603.9604
2014-01-01	605.0776
2015-01-01	610.7193
2016-01-01	602.2567