Year	Number
2007-01-01	588.9018
2008-01-01	697.4638
2009-01-01	615.2622
2010-01-01	555.8599
2011-01-01	492.0544
2012-01-01	490.4345
2013-01-01	465.2251
2014-01-01	475.3789
2015-01-01	503.1785
2016-01-01	496.0439
2017-01-01	510.7758