Year	Number
2004-01-01	2158
2005-01-01	2009
2006-01-01	1880
2007-01-01	1931
2008-01-01	1903
2009-01-01	1872
2010-01-01	1856
2011-01-01	1824
2012-01-01	1811
2013-01-01	1798
2014-01-01	1806
2015-01-01	1799
2016-01-01	1799