Year	Number
2004-01-01	3600573
2005-01-01	5053035
2006-01-01	6022108
2007-01-01	6455963
2008-01-01	7169322
2009-01-01	7486181
2010-01-01	7667817
2011-01-01	7943356
2012-01-01	8341031
2013-01-01	8649181
2014-01-01	8795651
2015-01-01	8877727
2016-01-01	8900258