Year	Number
2004-01-01	323.8231
2005-01-01	226.3163
2006-01-01	256.3121
2007-01-01	293.2833
2008-01-01	350.2845
2009-01-01	350.3781
2010-01-01	399.3289
2011-01-01	448.4365
2012-01-01	510.3776
2013-01-01	582.0102
2014-01-01	664.8221
2015-01-01	725.7941
2016-01-01	801.5095
2017-01-01	849.0120