Year	Number
2004-01-01	26.7860
2005-01-01	28.2368
2006-01-01	32.4389
2007-01-01	32.8106
2008-01-01	34.6729
2009-01-01	40.3615
2010-01-01	44.5959
2011-01-01	47.7739
2012-01-01	48.5190
2013-01-01	53.7349
2014-01-01	66.1918
2015-01-01	79.5766
2016-01-01	61.2881