Year	Number
2004-01-01	11.5527
2005-01-01	17.7771
2006-01-01	27.0102
2007-01-01	64.6598
2008-01-01	256.1459
2009-01-01	273.2631
2010-01-01	286.2240
2011-01-01	293.5716
2012-01-01	299.8421
2013-01-01	313.0153
2014-01-01	325.8202
2015-01-01	336.9744
2016-01-01	333.1871