1928 01 29.30  24.60  26.95 
1928 02 28.90  26.20  27.55 
1928 03 29.70  24.80  27.25 
1928 04 28.10  23.70  25.90 
1928 05 27.70  23.30  25.50 
1928 06 26.10  21.80  23.95 
1928 07 25.20  20.70  22.95 
1928 08 24.90  21.10  23.00 
1928 09 26.40  21.80  24.09 
1928 10 28.60  22.20  25.40 
1928 11 26.60  22.40  24.50 
1928 12 29.10  24.20  26.65 
1929 01 31.10  24.70  27.90 
1929 02 31.10  24.90  28.00 
1929 03 32.09  24.40  28.25 
1929 04 31.90  24.40  28.15 
1929 05 28.40  23.90  26.15 
1929 06 26.50  22.90  24.70 
1929 07 26.10  21.90  24.00 
1929 08 27.70  21.50  24.60 
1929 09 27.30  23.40  25.34 
1929 10 28.00  23.30  25.65 
1929 11 27.10  24.40  25.75 
1929 12 27.20  24.10  25.65 
1930 01 28.80  25.20  27.00 
1930 02 29.60  25.30  27.45 
1930 03 28.90  25.30  27.09 
1930 04 27.80  24.80  26.30 
1930 05 26.70  24.20  25.45 
1930 06 25.40  21.20  23.30 
1930 07 24.70  20.90  22.80 
1930 08 24.60  20.90  22.75 
1930 09 23.90  20.40  22.15 
1930 10 24.80  21.80  23.30 
1930 11 25.90  23.00  24.45 
1930 12 26.10  24.20  25.15 
1931 01 27.80  25.40  26.59 
1931 02 28.30  25.90  27.09 
1931 03 27.80  25.60  26.70 
1931 04 27.80  23.90  25.84 
1931 05 27.10  23.10  25.10 
1931 06 25.60  22.80  24.20 
1931 07 26.00  23.10  24.55 
1931 08 25.70  22.70  24.20 
1931 09 25.60  22.40  24.00 
1931 10 25.60  22.00  23.80 
1931 11 27.10  23.10  25.10 
1931 12 27.20  23.80  25.50 
1932 01 30.30  24.60  27.45 
1932 02 29.20  25.00  27.10 
1932 03 29.10  24.70  26.90 
1932 04 27.40  23.80  25.59 
1932 05 28.40  24.30  26.34 
1932 06 27.20  22.80  25.00 
1932 07 26.10  22.10  24.10 
1932 08 25.30  21.90  23.59 
1932 09 26.10  22.90  24.50 
1932 10 26.60  23.70  25.15 
1932 11 26.80  23.80  25.30 
1932 12 28.80  24.70  26.75 
1933 01 28.80  24.80  26.80 
1933 05 27.00  21.50  24.25 
1933 06 26.10  22.90  24.50 
1933 07 23.70  18.90  21.30 
1933 08 25.60  20.90  23.25 
1933 09 25.80  21.70  23.75 
1933 10 25.80  22.30  24.05 
1933 11 28.10  23.60  25.85 
1933 12 28.20  24.40  26.30 
1934 01 29.20  24.60  26.90 
1934 02 29.20  24.30  26.75 
1934 03 29.10  24.80  26.95 
1934 04 27.80  23.90  25.84 
1934 05 26.60  22.70  24.65 
1934 06 26.30  23.10  24.70 
1934 07 25.70  21.70  23.70 
1934 08 25.20  21.90  23.55 
1934 09 25.20  21.80  23.50 
1934 10 25.90  22.40  24.15 
1934 11 27.40  23.80  25.59 
1934 12 27.60  24.40  26.00 
1935 01 27.90  24.40  26.15 
1935 02 29.10  25.00  27.05 
1935 03 29.40  25.60  27.50 
1935 04 28.60  24.80  26.70 
1935 05 26.70  23.90  25.30 
1935 06 26.80  23.90  25.34 
1935 07 26.10  23.70  24.90 
1935 08 25.80  23.30  24.55 
1935 09 26.00  23.90  24.95 
1935 10 24.90  23.10  24.00 
1935 11 28.10  22.60  25.35 
1935 12 28.50  23.90  26.20 
1936 03 31.20  24.70  27.95 
1936 04 31.00  24.20  27.60 
1936 06 25.80  22.80  24.30 
1936 07 26.40  23.80  25.09 
1936 08 25.60  21.70  23.65 
1936 09 26.90  20.20  23.55 
1936 10 26.50  22.10  24.30 
1936 11 28.50  22.30  25.40 
1936 12 28.90  23.40  26.15 
1937 01 31.70  24.20  27.95 
1937 02 30.80  24.40  27.59 
1937 03 31.10  23.60  27.35 
1937 04 30.60  24.10  27.35 
1937 05 27.80  22.50  25.15 
1937 06 28.30  22.50  25.40 
1937 07 27.10  21.60  24.35 
1937 08 27.20  21.30  24.25 
1937 09 27.40  21.40  24.40 
1937 10 27.40  21.90  24.65 
1937 11 28.00  21.70  24.85 
1937 12 29.90  22.30  26.09 
1938 01 30.90  24.30  27.59 
1938 02 31.60  24.30  27.95 
1938 03 30.00  23.60  26.80 
1938 04 29.60  23.30  26.45 
1938 05 28.00  22.20  25.10 
1938 06 28.00  21.00  24.50 
1938 07 26.70  20.90  23.80 
1938 08 26.40  22.10  24.25 
1938 09 26.30  22.00  24.15 
1938 10 26.30  22.40  24.34 
1938 11 27.40  23.30  25.34 
1938 12 27.60  23.80  25.70 
1939 01 28.40  23.80  26.09 
1939 02 28.70  24.60  26.65 
1939 03 27.90  23.80  25.84 
1939 04 27.60  23.50  25.55 
1939 05 27.00  22.50  24.75 
1939 06 26.20  21.40  23.80 
1939 07 26.30  21.50  23.90 
1939 08 26.00  23.00  24.50 
1939 09 25.80  23.30  24.55 
1939 10 26.70  24.20  25.45 
1939 11 26.30  23.30  24.80 
1939 12 27.80  23.70  25.75 
