2008-12-20   1.690
2009-01-10   1.730
2009-08-02   1.580
2009-09-13   1.650
2009-10-08   1.820
2009-11-07   1.690
2009-11-21   1.710
2009-12-06   1.700
2010-02-10   1.570
2010-09-30   2.090
2010-12-08   1.870
2011-11-16   1.520
2012-01-15   1.470
2012-08-26   1.760
2012-11-18   1.810
2013-01-03   1.690
2013-01-05   1.880