Year	Number
2005-01-01	374
2006-01-01	405
2007-01-01	453
2008-01-01	471
2009-01-01	450
2010-01-01	462
2011-01-01	461
2012-01-01	577
2013-01-01	557
2014-01-01	584
2015-01-01	601
2016-01-01	636
2017-01-01	602