1988 09 99.99 -99.99  26.70 
1989 07 99.99 -99.99  26.10 
1989 08 99.99 -99.99  26.90 
1989 09 99.99 -99.99  26.90 
1990 02 99.99 -99.99  26.50 
1990 03 99.99 -99.99  26.50 
1990 06 99.99 -99.99  26.90 
1990 11 99.99 -99.99  27.60 
1990 12 99.99 -99.99  26.40 
1991 04 99.99 -99.99  27.40 
1991 05 99.99 -99.99  27.20 
1995 05 99.99 -99.99  27.00 
1996 08 99.99 -99.99  27.00 
1997 06 99.99 -99.99  27.40 
1997 11 99.99 -99.99  27.70 
1998 04 99.99 -99.99  28.20 
1998 05 99.99 -99.99  28.50 
1999 03 99.99 -99.99  27.60 
1999 05 99.99 -99.99  27.30 
1999 08 99.99 -99.99  26.50 
1999 10 99.99 -99.99  27.10 
1999 11 99.99 -99.99  26.90 
1999 12 99.99 -99.99  26.50 
2000 07 99.99 -99.99  27.10 
2000 08 99.99 -99.99  26.90 
2000 09 99.99 -99.99  27.60 
2000 10 99.99 -99.99  27.90 
2000 11 99.99 -99.99  27.10 
2000 12 99.99 -99.99  27.80 
2001 01 99.99 -99.99  26.30 
2001 02 99.99 -99.99  26.50 
2001 04 99.99 -99.99  27.40 
2001 05 99.99 -99.99  28.00 
2001 06 99.99 -99.99  27.30 
2001 07 99.99 -99.99  27.20 
2001 08 99.99 -99.99  27.80 
2001 09 99.99 -99.99  27.80 
2001 10 99.99 -99.99  27.30 
2001 11 99.99 -99.99  27.30 
2002 01 99.99 -99.99  26.70 
2002 02 99.99 -99.99  26.40 
2002 03 99.99 -99.99  27.30 
2002 04 99.99 -99.99  27.50 
2002 05 99.99 -99.99  28.20 
2002 06 99.99 -99.99  28.00 
2002 07 99.99 -99.99  27.40 
2002 08 99.99 -99.99  27.40 
2002 09 99.99 -99.99  27.80 
2002 10 99.99 -99.99  28.30 
2002 11 99.99 -99.99  28.20 
2002 12 99.99 -99.99  28.00 
2003 01 99.99 -99.99  28.00 
2003 03 99.99 -99.99  27.50 
2003 04 99.99 -99.99  28.20 
2003 05 99.99 -99.99  28.20 
2003 09 99.99 -99.99  27.90 
2003 10 99.99 -99.99  27.80 
2004 01 99.99 -99.99  27.30 
2004 02 99.99 -99.99  27.00 
2004 03 99.99 -99.99  27.60 
2004 04 99.99 -99.99  28.20 
2004 06 99.99 -99.99  27.40 
2004 07 99.99 -99.99  27.30 
2004 08 99.99 -99.99  27.50 
2005 01 99.99 -99.99  27.00 
2005 03 99.99 -99.99  27.80 
2005 04 99.99 -99.99  28.40 
2005 05 99.99 -99.99  28.40 
2005 07 99.99 -99.99  27.30 
2005 09 99.99 -99.99  27.90 
2005 10 99.99 -99.99  27.80 
2005 12 99.99 -99.99  27.30 
2006 01 99.99 -99.99  26.50 
2006 06 99.99 -99.99  27.00 
2006 07 99.99 -99.99  27.10 
2006 08 99.99 -99.99  26.70 
2007 01 99.99 -99.99  27.70 
2007 03 99.99 -99.99  27.20 
2007 05 99.99 -99.99  27.80 
2007 06 99.99 -99.99  27.70 
2007 07 99.99 -99.99  27.50 
2007 08 99.99 -99.99  27.50 
2007 09 99.99 -99.99  28.00 
2007 11 99.99 -99.99  28.00 
2007 12 99.99 -99.99  27.00 
2008 01 99.99 -99.99  27.70 
2008 02 99.99 -99.99  25.70 
2008 05 99.99 -99.99  27.70 
2008 06 99.99 -99.99  26.50 
2008 10 99.99 -99.99  28.00 
2008 11 99.99 -99.99  27.30 
2008 12 99.99 -99.99  26.90 
2009 01 99.99 -99.99  24.90 
2009 02 99.99 -99.99  26.40 
2009 07 99.99 -99.99  27.30 
2009 09 99.99 -99.99  28.30 
2009 10 99.99 -99.99  28.20 
2009 11 99.99 -99.99  27.60 
2009 12 99.99 -99.99  27.60 
2010 01 99.99 -99.99  26.90 
2010 02 99.99 -99.99  27.60 
2010 04 99.99 -99.99  28.80 
2010 05 99.99 -99.99  28.60 
2010 06 99.99 -99.99  27.50 
2010 07 99.99 -99.99  27.50 
2010 08 99.99 -99.99  28.70 
2010 09 99.99 -99.99  26.60 
2010 11 99.99 -99.99  27.40 
2010 12 99.99 -99.99  26.90 
2011 01 99.99 -99.99  26.70 
2011 02 99.99 -99.99  26.90 
2011 03 99.99 -99.99  27.20 
2011 04 99.99 -99.99  27.50 
2011 05 99.99 -99.99  27.60 
2011 06 99.99 -99.99  27.50 
2011 07 99.99 -99.99  27.10 
2011 08 99.99 -99.99  27.30 
2011 09 99.99 -99.99  27.70 
2011 10 99.99 -99.99  27.90 
2011 11 99.99 -99.99  27.60 
2011 12 99.99 -99.99  27.50 
2012 02 99.99 -99.99  27.60 
2012 03 99.99 -99.99  27.70 
2012 04 99.99 -99.99  27.80 
2012 05 99.99 -99.99  28.10 
2012 06 99.99 -99.99  28.20 
2012 08 99.99 -99.99  27.80 
2012 10 99.99 -99.99  28.20 
2012 11 99.99 -99.99  27.60 
2012 12 99.99 -99.99  27.50 
2013 02 99.99 -99.99  27.20 
2013 03 99.99 -99.99  28.00 
2013 04 99.99 -99.99  28.00 
2013 05 99.99 -99.99  28.00 
2013 06 99.99 -99.99  28.10 
2013 07 99.99 -99.99  27.00 
2013 10 99.99 -99.99  28.10 
