Year	Number
2004-01-01	1845
2005-01-01	1860
2006-01-01	1939
2007-01-01	1977
2008-01-01	2037
2009-01-01	2059
2010-01-01	2076
2011-01-01	2073
2012-01-01	2237
2013-01-01	2172
2014-01-01	2169
2015-01-01	2149