2009-01-11   -21.792
2009-10-09   -21.363
2009-11-07   -22.089
2009-11-21   -21.311
2009-12-06   -21.302
2010-02-11   -21.710
2010-09-30   -21.274
2010-12-08   -21.306
2012-01-15   -22.031
2012-08-26   -22.094
2012-09-21   -21.802
2013-01-03   -21.574