Year	Number
2008-01-01	238.9682
2009-01-01	237.1713
2010-01-01	230.4515
2011-01-01	223.3608
2012-01-01	225.2634
2013-01-01	217.0216
2014-01-01	208.0515
2015-01-01	210.2621
2016-01-01	203.3294
2017-01-01	203.6333