Year	Number
2004-01-01	20.0886
2005-01-01	28.1605
2006-01-01	36.7178
2007-01-01	52.4270
2008-01-01	70.3803
2009-01-01	73.1549
2010-01-01	76.5737
2011-01-01	84.2639
2012-01-01	92.7058
2013-01-01	103.8722
2014-01-01	94.8735
2015-01-01	86.9117
2016-01-01	88.5532
2017-01-01	96.9936