Year	Number
2004-01-01	47
2005-01-01	51
2006-01-01	56
2007-01-01	61
2008-01-01	66
2009-01-01	71
2010-01-01	77
2011-01-01	83
2012-01-01	84
2013-01-01	92
2014-01-01	96
2015-01-01	98
2016-01-01	100