1979 06 23.20  16.68  19.94 
1981 01 99.99 -99.99  20.80 
1981 02 99.99 -99.99  23.90 
1981 03 99.99 -99.99  24.90 
1981 04 99.99 -99.99  25.70 
1981 05 99.99 -99.99  24.40 
1981 06 99.99 -99.99  22.90 
1981 07 99.99 -99.99  23.40 
1981 08 99.99 -99.99  23.30 
1981 09 99.99 -99.99  23.10 
1981 10 99.99 -99.99  23.00 
1981 11 99.99 -99.99  22.40 
1981 12 99.99 -99.99  22.20 
1982 01 99.99 -99.99  22.50 
1982 02 99.99 -99.99  23.60 
1982 03 99.99 -99.99  24.10 
1982 04 99.99 -99.99  24.90 
1982 05 99.99 -99.99  24.20 
1982 06 99.99 -99.99  23.60 
1982 07 99.99 -99.99  23.90 
1982 08 99.99 -99.99  24.30 
1982 09 99.99 -99.99  22.10 
1982 10 99.99 -99.99  22.80 
1982 11 99.99 -99.99  22.50 
1982 12 99.99 -99.99  22.20 
1983 01 99.99 -99.99  22.10 
1983 02 99.99 -99.99  23.10 
1983 03 99.99 -99.99  23.80 
1983 04 99.99 -99.99  25.30 
1983 05 99.99 -99.99  25.90 
1983 06 99.99 -99.99  23.90 
1983 07 99.99 -99.99  24.30 
1983 08 99.99 -99.99  23.60 
1983 09 99.99 -99.99  23.60 
1983 10 99.99 -99.99  22.90 
1983 11 99.99 -99.99  23.30 
1983 12 99.99 -99.99  22.80 
1984 01 99.99 -99.99  22.60 
1984 02 99.99 -99.99  24.50 
1984 03 99.99 -99.99  26.20 
1984 04 99.99 -99.99  26.80 
1984 05 99.99 -99.99  27.80 
1984 06 99.99 -99.99  24.00 
1984 07 99.99 -99.99  23.50 
1984 08 99.99 -99.99  24.20 
1984 09 99.99 -99.99  22.80 
1984 10 99.99 -99.99  24.60 
1984 11 99.99 -99.99  22.70 
1984 12 99.99 -99.99  23.40 
1985 01 99.99 -99.99  22.80 
1985 02 99.99 -99.99  24.40 
1985 03 99.99 -99.99  25.00 
1985 04 99.99 -99.99  26.20 
1985 05 99.99 -99.99  25.30 
1985 06 99.99 -99.99  24.70 
1985 07 99.99 -99.99  25.30 
1985 08 99.99 -99.99  24.50 
1985 09 99.99 -99.99  23.90 
1985 10 99.99 -99.99  23.90 
1985 11 99.99 -99.99  23.90 
1985 12 99.99 -99.99  24.00 
1986 01 99.99 -99.99  22.30 
1986 02 99.99 -99.99  22.30 
1986 03 99.99 -99.99  22.70 
1986 04 99.99 -99.99  25.20 
1986 05 99.99 -99.99  25.80 
1986 06 99.99 -99.99  24.10 
1986 07 99.99 -99.99  24.10 
1986 08 99.99 -99.99  24.40 
1986 09 99.99 -99.99  23.40 
1986 10 99.99 -99.99  23.60 
1986 11 99.99 -99.99  24.70 
1986 12 99.99 -99.99  24.50 
1987 01 99.99 -99.99  23.70 
1987 02 99.99 -99.99  25.50 
1987 03 99.99 -99.99  26.60 
1987 04 25.16  15.25  20.20 
1987 05 26.65  16.17  21.41 
1987 09 24.21  16.87  20.54 
1987 11 23.55  14.58  19.06 
1998 08 24.18  17.25  20.71 
2000 07 24.11  16.23  20.17 
2000 08 23.70  16.62  20.16 
2000 09 23.54  16.82  20.18 
2001 04 26.32  16.02  21.17 
2001 11 22.33  14.45  18.39 
2002 10 23.42  16.73  20.07 
2004 09 24.59  16.95  20.77 
2006 03 25.23  14.37  19.79 
2006 04 25.92  15.82  20.87 
2006 10 24.17  17.04  20.61 
2006 12 22.64  15.16  18.90 
2007 02 24.55  14.52  19.53 
2007 03 25.23  15.07  20.15 
2007 04 26.94  16.75  21.84 
2007 05 26.34  17.19  21.76 
2007 06 24.29  16.98  20.63 
2007 07 24.21  17.14  20.67 
2007 08 24.00  16.98  20.49 
2007 09 23.98  16.71  20.34 
2007 10 22.95  16.04  19.49 
2007 11 22.46  14.59  18.52 
2007 12 23.88  13.86  18.86 
2008 01 23.11  13.94  18.52 
2008 02 24.46  14.98  19.71 
2008 04 26.40  15.88  21.14 
2008 05 25.85  17.37  21.61 
2008 06 23.52  16.74  20.13 
2008 07 23.36  16.19  19.77 
2008 08 24.57  16.73  20.65 
2008 09 24.36  16.99  20.67 
2008 10 22.83  16.25  19.54 
2008 12 22.81  13.78  18.29 
2010 01 23.26  13.37  18.31 
2010 02 24.93  15.13  20.03 
2010 03 26.41  15.10  20.75 
