Year	Number
2007-01-01	0.0562292316409578
2008-01-01	0.0356814155467123
2009-01-01	0.0351978865478365
2010-01-01	0.0277187554667452
2011-01-01	0.0312790657051253
2012-01-01	0.1938207872977370
2013-01-01	0.2256585621990830
2014-01-01	0.4837752357411220