Year	Number
2008-01-01	521.3402
2009-01-01	533.2782
2010-01-01	546.1004
2011-01-01	549.6791
2012-01-01	555.0699
2013-01-01	576.2230
2014-01-01	607.5631
2015-01-01	643.8358
2016-01-01	645.8155