Year	Number
2004-01-01	2489789
2005-01-01	2425632
2006-01-01	2349850
2007-01-01	2335129
2008-01-01	2297878
2009-01-01	2250333
2010-01-01	2226477
2011-01-01	2154935
2012-01-01	2081584
2013-01-01	2028731
2014-01-01	2013413
2015-01-01	1997816
2016-01-01	2012521
2017-01-01	2018506