Year	Number
2004-01-01	1346.3199
2005-01-01	1393.5398
2006-01-01	1409.5242
2007-01-01	1571.3279
2008-01-01	1674.3915
2009-01-01	1738.8810
2010-01-01	1814.1708
2011-01-01	1925.3648
2012-01-01	2021.3920
2013-01-01	2180.8827
2014-01-01	2356.4193
2015-01-01	1604.1918
2016-01-01	1633.1415
2017-01-01	1676.4103