Year	Number
2004-01-01	37746
2005-01-01	45520
2006-01-01	56188
2007-01-01	130968
2008-01-01	1067682
2009-01-01	1260570
2010-01-01	1597072
2011-01-01	1778691
2012-01-01	2096194
2013-01-01	1969761
2014-01-01	1623186
2015-01-01	1368853
2016-01-01	1670204
2017-01-01	1713909