Year	Number
2004-01-01	2102.4604
2005-01-01	2227.8814
2006-01-01	2187.0301
2007-01-01	2220.6739
2008-01-01	2229.2312
2009-01-01	2269.3448
2010-01-01	2281.2827
2011-01-01	2176.6048
2012-01-01	2096.4157
2013-01-01	2042.0245
2014-01-01	1987.0399
2015-01-01	1925.3722
2016-01-01	1869.1092
2017-01-01	1900.3022