Year	Number
2004-01-01	758.5703
2005-01-01	1131.4351
2006-01-01	1254.0350
2007-01-01	1267.0066
2008-01-01	1324.8153
2009-01-01	1234.1750
2010-01-01	994.7268
2011-01-01	933.8491
2012-01-01	825.2885
2013-01-01	752.0342
2014-01-01	722.5806
2015-01-01	731.2446
2016-01-01	716.3993
2017-01-01	684.0644