Year	Number
2004-01-01	2180
2005-01-01	2184
2006-01-01	2250
2007-01-01	2272
2008-01-01	2283
2009-01-01	2253
2010-01-01	2193
2011-01-01	2194
2012-01-01	2157
2013-01-01	2096
2014-01-01	2033
2015-01-01	1950
2016-01-01	1679