Year	Number
2004-01-01	480.1735
2005-01-01	580.2958
2006-01-01	733.3560
2007-01-01	850.5611
2008-01-01	899.1847
2009-01-01	943.3939
2010-01-01	928.9104
2011-01-01	997.4723
2012-01-01	1011.0468
2013-01-01	1069.2944
2014-01-01	1066.5499
2015-01-01	1060.0909
2016-01-01	1009.9327
2017-01-01	988.2896