Year	Number
2004-01-01	193.5159
2005-01-01	331.3504
2006-01-01	416.1535
2007-01-01	470.0606
2008-01-01	531.0921
2009-01-01	574.9193
2010-01-01	659.7219
2011-01-01	761.7805
2012-01-01	1011.9338
2013-01-01	1006.6724
2014-01-01	1187.5485
2015-01-01	1248.1956
2016-01-01	1403.3244