Year	Number
2004-01-01	89.9413
2005-01-01	102.6622
2006-01-01	121.8391
2007-01-01	168.6165
2008-01-01	215.6587
2009-01-01	177.7541
2010-01-01	186.4865
2011-01-01	203.1217
2012-01-01	220.6421
2013-01-01	232.5034
2014-01-01	236.0373
2015-01-01	236.7667
2016-01-01	233.3717
2017-01-01	232.0368