Year	Number
2004-01-01	723067
2005-01-01	760969
2006-01-01	703355
2007-01-01	732351
2008-01-01	823702
2009-01-01	1102394
2010-01-01	1401184
2011-01-01	2460762
2012-01-01	2133951
2013-01-01	2212343
2014-01-01	2476496
2015-01-01	2492187