Year	Number
2005-01-01	27.3786
2006-01-01	28.1819
2007-01-01	31.7148
2008-01-01	33.8292
2009-01-01	32.2083
2010-01-01	31.3778
2011-01-01	32.1539
2012-01-01	31.7510
2013-01-01	32.4467
2014-01-01	33.3091
2015-01-01	30.4229
2016-01-01	28.9388
2017-01-01	28.2758