Year	Number
2004-01-01	36.8647477361476
2005-01-01	42.2515457803998
2006-01-01	41.9412932056175
2007-01-01	54.1872827791003
2008-01-01	55.9593797677589
2009-01-01	55.2314546187662
2010-01-01	58.8074040560453
2011-01-01	57.2573970293309
2012-01-01	55.4649986977493
2013-01-01	55.4649237130750
2014-01-01	50.6730327218468