Year	Number
2004-01-01	28.6266
2005-01-01	42.8115
2006-01-01	86.9144
2007-01-01	161.4292
2008-01-01	218.2898
2009-01-01	256.4539
2010-01-01	320.7289
2011-01-01	446.3181
2012-01-01	482.4922
2013-01-01	621.2312
2014-01-01	710.4542
2015-01-01	679.9871
2016-01-01	716.6383