Year	Number
2004-01-01	345822
2005-01-01	337080
2006-01-01	363075
2007-01-01	363510
2008-01-01	396988
2009-01-01	440139
2010-01-01	446272
2011-01-01	419516
2012-01-01	469615
2013-01-01	475024
2014-01-01	516097
2015-01-01	523553
2016-01-01	553313