Year	Number
2007-01-01	13477368
2008-01-01	14937580
2009-01-01	21746161
2010-01-01	30103945
2011-01-01	35072509
2012-01-01	56133070
2013-01-01	60711877
2014-01-01	62494005
2015-01-01	63965162
2016-01-01	88803648
2017-01-01	88767088