1911      1912      1913      1914      1915      1916      1917

1    14.8      14.7      15.4      15.4      15.6      15.9      13.3

2    15.7      15.9      15.2      15.8      16.0      15.7      13.7

3    17.3      17.2      16.0      18.1      16.6      15.3      15.4

4    20.3      21.3      21.7      21.3      22.1      21.7      19.6

5    23.4      24.0      24.0      24.0      22.7      25.2      22.5

6    28.1      26.1      27.5      26.5      27.1      26.9      27.3

7    28.4      28.4      28.1      28.0      29.2      28.3      27.2

8    27.3      27.2      28.2      28.0      28.8      27.4      28.2

9    26.8      25.8      26.7      25.9      26.2      27.2      27.0

10   21.4      22.4      22.1      24.0      25.4      23.1      23.1

11   18.9      19.2      20.2      20.0      21.7      19.6      18.8

12   17.9      17.1      15.7      17.7      17.4      17.2      14.0

均   21.7      21.6      21.7      22.1      22.4      22.0      20.8