Year	Number
2005-01-01	3299.1736
2006-01-01	3548.5884
2007-01-01	3847.8129
2008-01-01	3860.9511
2009-01-01	4030.6532
2010-01-01	4221.6881
2011-01-01	4314.2066
2012-01-01	4688.7027
2013-01-01	2984.4037
2014-01-01	3045.1783
2015-01-01	2922.6923
2016-01-01	2854.0844
2017-01-01	3008.5690