Year	Number
2004-01-01	380.8980
2005-01-01	517.3145
2006-01-01	660.1867
2007-01-01	728.8622
2008-01-01	770.4531
2009-01-01	874.2730
2010-01-01	974.6421
2011-01-01	1006.6973
2012-01-01	1324.9146
2013-01-01	1554.3238
2014-01-01	1626.2834
2015-01-01	1566.4881
2016-01-01	1641.3492