Year	Number
2004-01-01	2510372
2005-01-01	3489989
2006-01-01	2051358
2007-01-01	2244000
2008-01-01	2556916
2009-01-01	2504213
2010-01-01	2696177
2011-01-01	3149670
2012-01-01	3043074
2013-01-01	2184244
2014-01-01	2153377
2015-01-01	1919658
2016-01-01	1820370