Year	Number
2004-01-01	2997
2005-01-01	2761
2006-01-01	2712
2007-01-01	2719
2008-01-01	2721
2009-01-01	2724
2010-01-01	2722
2011-01-01	2770
2012-01-01	2771
2013-01-01	2771
2014-01-01	2667
2015-01-01	2631
2016-01-01	2622