Year	Number
2004-01-01	34.5569
2005-01-01	48.4590
2006-01-01	51.3626
2007-01-01	69.3087
2008-01-01	79.9641
2009-01-01	73.6928
2010-01-01	74.2087
2011-01-01	89.6066
2012-01-01	83.9236
2013-01-01	70.3454
2014-01-01	76.5953
2015-01-01	74.6760
2016-01-01	74.7521