Year	Number
2004-01-01	321.4925
2005-01-01	303.3215
2006-01-01	337.8958
2007-01-01	381.1239
2008-01-01	410.0514
2009-01-01	655.8190
2010-01-01	676.9644
2011-01-01	719.1439
2012-01-01	760.8072
2013-01-01	799.3242
2014-01-01	860.4347
2015-01-01	914.9441
2016-01-01	945.3342
2017-01-01	1012.9896