Year	Number
2004-01-01	110
2005-01-01	142
2006-01-01	172
2007-01-01	190
2008-01-01	242
2009-01-01	260
2010-01-01	285
2011-01-01	316
2012-01-01	343
2013-01-01	345
2014-01-01	360
2015-01-01	396
2016-01-01	412