Year	Number
2007-01-01	47.4301
2008-01-01	51.3769
2009-01-01	39.9660
2010-01-01	46.4522
2011-01-01	48.5693
2012-01-01	45.1622
2013-01-01	49.8287
2014-01-01	40.4520
2015-01-01	43.9787
2016-01-01	77.5503
2017-01-01	86.6718