Year	Number
2004-01-01	82.7381
2005-01-01	94.0120
2006-01-01	103.0262
2007-01-01	120.2770
2008-01-01	123.8623
2009-01-01	128.1670
2010-01-01	134.9335
2011-01-01	150.2229
2012-01-01	156.2383
2013-01-01	167.8661
2014-01-01	183.5457
2015-01-01	195.0994
2016-01-01	197.0093