Year	Number
2004-01-01	1133.8711
2005-01-01	1159.7910
2006-01-01	1182.4691
2007-01-01	1206.9832
2008-01-01	1230.5216
2009-01-01	1263.8780
2010-01-01	1300.6837
2011-01-01	1359.5222
2012-01-01	1417.3081
2013-01-01	1448.0065
2014-01-01	1468.2415
2015-01-01	1452.0704
2016-01-01	1378.2131