Year	Number
2008-01-01	1544070
2009-01-01	1564623
2010-01-01	2139740
2011-01-01	2138564
2012-01-01	2654488
2013-01-01	2572482
2014-01-01	1293503
2015-01-01	1389431
2016-01-01	2251623