Year	Number
2006-01-01	67870
2007-01-01	77924
2008-01-01	122173
2009-01-01	120310
2010-01-01	148683
2011-01-01	161026
2012-01-01	151621
2013-01-01	185046
2014-01-01	197812
2015-01-01	170915