Year	Number
2004-01-01	1416.5361
2005-01-01	1433.0027
2006-01-01	1633.6623
2007-01-01	1766.8006
2008-01-01	1922.7896
2009-01-01	2027.8923
2010-01-01	2125.6696
2011-01-01	2276.8934
2012-01-01	2367.3660
2013-01-01	2451.7109
2014-01-01	2530.3133
2015-01-01	2612.1365
2016-01-01	2592.0100