2008-04-29   33.920
2008-12-20   32.350
2009-01-09   32.580
2009-07-11   34.020
2009-10-09   29.240
2009-11-07   29.970
2009-12-06   34.060
2010-02-11   33.690
2011-11-03   32.800
2012-01-15   33.340