Year	Number
2004-01-01	801.4369
2005-01-01	855.3809
2006-01-01	803.5111
2007-01-01	847.3090
2008-01-01	967.7434
2009-01-01	1047.5204
2010-01-01	1130.3690
2011-01-01	1272.5455
2012-01-01	1359.1928
2013-01-01	1468.8607
2014-01-01	1550.5935
2015-01-01	1568.6810
2016-01-01	1498.0760
2017-01-01	1411.7221