Year	Number
2005-01-01	8086987
2006-01-01	8835307
2007-01-01	10143455
2008-01-01	11706718
2009-01-01	10333962
2010-01-01	9818871
2011-01-01	8251286
2012-01-01	10016907
2013-01-01	13253825
2014-01-01	15024388
2015-01-01	16205231
2016-01-01	19626739
2017-01-01	21242220