Year	Number
2006-01-01	122
2007-01-01	169
2008-01-01	192
2009-01-01	208
2010-01-01	253
2011-01-01	254
2012-01-01	262
2013-01-01	267
2014-01-01	271
2015-01-01	252
2016-01-01	232