1968 09 99.99  12.97 -99.99 
1968 11 99.99    .68 -99.99 
1969 01 99.99  -6.48 -99.99 
1969 02 99.99  -2.06 -99.99 
1969 03 99.99  -2.84 -99.99 
1969 04 99.99   8.04 -99.99 
1969 05 99.99  14.15 -99.99 
1969 08 99.99  19.39 -99.99 
1969 09 99.99  15.28 -99.99 
1969 10 99.99   7.44 -99.99 
1969 11 99.99   -.36 -99.99 
1969 12 99.99  -4.17 -99.99 
1970 01 99.99  -8.22 -99.99 
1970 02 99.99  -3.84 -99.99 
1970 03 99.99   -.25 -99.99 
1970 04 99.99   7.33 -99.99 
1970 05 99.99  14.88 -99.99 
1970 07 99.99  19.29 -99.99 
1970 08 99.99  20.45 -99.99 
1970 09 99.99  16.44 -99.99 
1970 10 99.99   7.36 -99.99 
1970 11 99.99   1.33 -99.99 
1970 12 99.99  -2.87 -99.99 
1971 01 99.99  -7.24 -99.99 
1971 02 99.99  -5.85 -99.99 
1971 03 99.99    .61 -99.99 
1971 04 99.99   7.75 -99.99 
1971 05 99.99  11.42 -99.99 
1971 06 99.99  19.64 -99.99 
1971 07 99.99  17.49 -99.99 
1971 08 99.99  17.00 -99.99 
1971 09 99.99  15.04 -99.99 
1971 11 99.99   2.01 -99.99 
1971 12 99.99    .16 -99.99 
