1989 01 99.99 -17.61 -99.99 
1989 04  3.84  -1.00   1.42 
1990 01 -5.95 -99.99 -99.99 
1991 04 99.99  -2.85 -99.99 
1991 07 99.99  10.47 -99.99 
1996 06 15.76   8.85  12.30 
1996 08 16.36  10.24  13.30 
1996 10  7.70   1.52   4.60 
1997 03 -2.77 -12.83  -7.80 
1997 04  3.77  -3.40    .18 
1997 05  8.45   2.05   5.25 
1997 06 14.58   7.32  10.95 
1997 07 17.36   9.85  13.60 
1997 08 15.14   9.03  12.08 
1997 09 13.36   8.17  10.76 
1997 10  8.51   2.18   5.34 
1997 11  2.78  -4.46   -.84 
1998 05 12.17   4.94   8.55 
1998 06 14.89   8.60  11.75 
1998 07 17.42  10.93  14.17 
1998 08 16.87   8.33  12.60 
1998 09 14.36   8.38  11.37 
1998 10  8.45   2.33   5.39 
1999 03  1.04  -5.77  -2.36 
1999 06 16.76   7.03  11.89 
1999 09 17.17   9.13  13.15 
2003 10  8.53   2.80   5.66 
2006 09 13.62   6.94  10.28 
2010 10  9.53   3.58   6.55 
