Year	Number
2006-01-01	174.5734
2007-01-01	202.2695
2008-01-01	214.5712
2009-01-01	199.2487
2010-01-01	214.5337
2011-01-01	221.7445
2012-01-01	626.4455
2013-01-01	622.7683
2014-01-01	638.7298
2015-01-01	698.5517
2016-01-01	720.4695
2017-01-01	725.7457