Year	Number
2004-01-01	235
2005-01-01	269
2006-01-01	311
2007-01-01	387
2008-01-01	429
2009-01-01	446
2010-01-01	470
2011-01-01	520
2012-01-01	587
2013-01-01	611
2014-01-01	658
2015-01-01	702
2016-01-01	692