Year	Number
2004-01-01	15.65673326
2005-01-01	15.90035587
2006-01-01	18.00457467
2007-01-01	21.43816439
2008-01-01	23.98917781
2009-01-01	26.57668728
2010-01-01	34.47609598
2011-01-01	72.00175675
2012-01-01	85.70236439
2013-01-01	52.77793043
2014-01-01	59.02858087