Jan. 1991 30.85 48.65 12.50 124.38
Feb. 1991 27.30 44.25 14.75 142.26
Mar. 1991 40.15 38.90 12.50 110.34
Apr. 1991 35.93 33.91 15.50 107.41
May  1991 30.58 44.56 14.50  90.88
Jun. 1991 29.49 55.32 14.00  68.32
Jul. 1991 31.86 88.90 16.50  32.41
Aug. 1991 28.50 94.88 16.50  28.50
Sep. 1991 40.09 105.70 14.00 20.25
Oct. 1991 35.45 84.54 13.50  59.34
Nov. 1991 32.30 42.45 14.50 102.50
Dec. 1991 28.45 35.69 15.50 144.32
Jan. 1992 25.41 30.67 15.75 156.65
Feb. 1992 20.18 30.98 16.25 166.32
Mar. 1992 24.85 45.50 15.45 109.90
Apr. 1992 30.98 50.92 15.00  90.90
May  1992 34.40 60.79 16.25  89.43
Jun. 1992 25.53 78.80 15.95  45.50
Jul. 1992 39.00 99.34 14.50  40.40
Aug. 1992 28.45 106.60 12.50 29.76
Sep. 1992 30.45 100.20 14.95 30.45
Oct. 1992 31.11  90.65 15.75 45.11
Nov. 1992 33.40 56.87 14.98  69.99
Dec. 1992 35.50 88.45 15.92  93.35