Year	Number
2004-01-01	145.6736
2005-01-01	150.4706
2006-01-01	151.3980
2007-01-01	154.1453
2008-01-01	144.4561
2009-01-01	178.7261
2010-01-01	156.6944
2011-01-01	156.3794
2012-01-01	160.8856
2013-01-01	166.3841
2014-01-01	153.9597
2015-01-01	160.0340
2016-01-01	180.2508