2008-12-08   1.740
2008-12-09   1.860
2008-12-10   1.880
2009-01-24   1.900
2009-05-20   1.870
2010-04-01   1.870
2010-06-11   1.860
2010-12-14   1.940
2012-04-05   1.580
2013-03-14   1.790
2014-04-22   1.830
2014-04-23   1.690
2015-04-05   1.910
2015-04-15   1.860
2016-03-17   1.740
2017-02-10   1.800