1921 1 . 1921 2 . 1921 3 . 1921 4 . 1921 5 . 1921 6 . 1921 7 10.9800 1921 8 10.9100 1921 9 10.5400 1921 10 10.4200 1921 11 10.0900 1921 12 10.5500 1922 1 10.3400 1922 2 9.33000 1922 3 10.2600 1922 4 9.85000 1922 5 10.2200 1922 6 10.3500 1922 7 10.6900 1922 8 10.6500 1922 9 10.2200 1922 10 10.1700 1922 11 10.1400 1922 12 10.7700 1923 1 10.6900 1923 2 9.68000 1923 3 10.6800 1923 4 10.1600 1923 5 10.6600 1923 6 10.5600 1923 7 11.1100 1923 8 11.1600 1923 9 10.6600 1923 10 10.7300 1923 11 10.2700 1923 12 10.7600 1924 1 10.8200 1924 2 10.0000 1924 3 10.5100 1924 4 10.2600 1924 5 10.5900 1924 6 10.3700 1924 7 10.9100 1924 8 10.8900 1924 9 10.3700 1924 10 10.3600 1924 11 9.92000 1924 12 10.8500 1925 1 10.6800 1925 2 9.53000 1925 3 10.3300 1925 4 10.0900 1925 5 10.3500 1925 6 10.2400 1925 7 10.7900 1925 8 10.7300 1925 9 10.3100 1925 10 10.3700 1925 11 9.94000 1925 12 10.6400 1926 1 10.4100 1926 2 9.44000 1926 3 10.3000 1926 4 9.99000 1926 5 10.2200 1926 6 10.1400 1926 7 10.6600 1926 8 10.5400 1926 9 10.2700 1926 10 10.2000 1926 11 9.88000 1926 12 10.6700 1927 1 10.3800 1927 2 9.27000 1927 3 10.1600 1927 4 9.85000 1927 5 10.0400 1927 6 9.90000 1927 7 10.4700 1927 8 10.4300 1927 9 9.93000 1927 10 9.80000 1927 11 9.44000 1927 12 10.1500 1928 1 9.93000 1928 2 9.16000 1928 3 9.72000 1928 4 9.32000 1928 5 9.63000 1928 6 9.58000 1928 7 10.1200 1928 8 9.98000 1928 9 9.47000 1928 10 9.50000 1928 11 9.06000 1928 12 9.67000 1929 1 9.70000 1929 2 8.72000 1929 3 9.56000 1929 4 9.17000 1929 5 9.52000 1929 6 9.49000 1929 7 9.94000 1929 8 9.96000 1929 9 9.44000 1929 10 9.50000 1929 11 9.10000 1929 12 9.84000 1930 1 9.65000 1930 2 8.25000 1930 3 9.29000 1930 4 8.92000 1930 5 9.11000 1930 6 8.85000 1930 7 9.22000 1930 8 9.14000 1930 9 8.50000 1930 10 8.50000 1930 11 8.09000 1930 12 8.58000 1931 1 8.35000 1931 2 7.45000 1931 3 8.13000 1931 4 7.80000 1931 5 7.88000 1931 6 7.61000 1931 7 7.95000 1931 8 7.81000 1931 9 7.42000 1931 10 7.31000 1931 11 6.92000 1931 12 7.33000 1932 1 7.06000 1932 2 6.53000 1932 3 6.87000 1932 4 6.51000 1932 5 6.61000 1932 6 6.35000 1932 7 6.50000 1932 8 6.36000 1932 9 6.05000 1932 10 5.98000 1932 11 5.80000 1932 12 6.25000 1933 1 5.93000 1933 2 5.40000 1933 3 5.80000 1933 4 5.49000 1933 5 5.67000 1933 6 5.74000 1933 7 5.89000 1933 8 5.96000 1933 9 5.82000 1933 10 5.88000 1933 11 5.50000 1933 12 5.96000 1934 1 5.78000 1934 2 5.31000 1934 3 5.82000 1934 4 5.57000 1934 5 5.80000 1934 6 5.71000 1934 7 5.97000 1934 8 6.00000 1934 9 5.68000 1934 10 5.78000 1934 11 5.42000 1934 12 6.02000 1935 1 5.90000 1935 2 5.26000 1935 3 5.72000 1935 4 5.61000 1935 5 5.77000 1935 6 5.66000 1935 7 5.92000 1935 8 5.97000 1935 9 5.65000 1935 10 5.72000 1935 11 5.50000 1935 12 6.18000 1936 1 6.17000 1936 2 5.91000 1936 3 6.01000 1936 4 5.79000 1936 5 5.90000 1936 6 5.82000 1936 7 6.28000 1936 8 6.22000 1936 9 6.04000 1936 10 6.19000 1936 11 5.89000 1936 12 6.70000 1937 1 6.54000 1937 2 5.82000 1937 3 6.32000 1937 4 6.11000 1937 5 6.19000 1937 6 6.13000 1937 7 6.54000 1937 8 6.44000 1937 9 6.20000 1937 10 6.16000 1937 11 5.86000 1937 12 6.50000 1938 1 6.21000 1938 2 5.46000 1938 3 5.96000 1938 4 5.70000 1938 5 5.70000 1938 6 5.71000 1938 7 6.01000 1938 8 5.90000 1938 9 5.76000 1938 10 5.66000 1938 11 5.47000 1938 12 6.12000 1939 1 5.81000 1939 2 5.23000 1939 3 5.72000 1939 4 5.50000 1939 5 5.63000 1939 6 5.65000 1939 7 6.01000 1939 8 5.98000 1939 9 5.71000 1939 10 5.65000 1939 11 5.38000 1939 12 6.07000 1940 1 6.00000 1940 2 5.34000 1940 3 5.67000 1940 4 5.44000 1940 5 5.50000 1940 6 5.48000 1940 7 . 1940 8 . 1940 9 . 1940 10 . 1940 11 . 1940 12 .