Year	Number
2004-01-01	2943
2005-01-01	3001
2006-01-01	3092
2007-01-01	3133
2008-01-01	3083
2009-01-01	2946
2010-01-01	2874
2011-01-01	2795
2012-01-01	2706
2013-01-01	2607
2014-01-01	2528
2015-01-01	2449
2016-01-01	2382
2017-01-01	2412