1901
|
18,21
|
1902
|
18,21
|
1903
|
18,21
|
1904
|
18,21
|
1905
|
18,21
|
1906
|
19,73
|
1907
|
18,21
|
1908
|
18,21
|
1909
|
18,21
|
1910
|
18,21
|
1911
|
15,79
|
1912
|
15,79
|
1913
|
15,79
|
1914
|
15,79
|
1915
|
13,15
|
1916
|
11,84
|
1917
|
9,87
|
1918
|
7,64
|
1919
|
6,23
|
1920
|
4,47
|
1921
|
5,15
|
1922
|
5,26
|
1923
|
4,83
|
1924
|
4,23
|
1925
|
3,95
|
1926
|
3,00
|
1927
|
2,89
|
1928
|
2,89
|
1929
|
2,72
|
1930
|
2,69
|
1931
|
2,82
|
|
1932
|
3,08
|
1933
|
3,20
|
1934
|
3,34
|
1935
|
3,64
|
1936
|
3,38
|
1937
|
2,69
|
1938
|
2,37
|
1939
|
2,21
|
1940
|
1,88
|
1941
|
1,60
|
1942
|
1,33
|
1943
|
1,07
|
1944
|
0,88
|
1945
|
0,59
|
1946
|
0,59
|
1947
|
0,26
|
1948
|
0,16
|
1949
|
0,14
|
1950
|
0,13
|
1951
|
0,11
|
1952
|
0,10
|
1953
|
0,10
|
1954
|
0,10
|
1955
|
0,10
|
1956
|
0,10
|
1957
|
0,09
|
1958
|
0,08
|
1959
|
0,08
|
1960
|
7,45
|
1961
|
7,21
|
1962
|
6,88
|
|
1963
|
6,56
|
1964
|
6,36
|
1965
|
6,19
|
1966
|
5,99
|
1967
|
5,81
|
1968
|
5,55
|
1969
|
5,21
|
1970
|
4,94
|
1971
|
4,68
|
1972
|
4,41
|
1973
|
4,11
|
1974
|
3,61
|
1975
|
3,23
|
1976
|
2,94
|
1977
|
2,69
|
1978
|
2,47
|
1979
|
2,23
|
1980
|
1,96
|
1981
|
1,73
|
1982
|
1,55
|
1983
|
1,42
|
1984
|
1,32
|
1985
|
1,25
|
1986
|
1,22
|
1987
|
1,18
|
1988
|
1,15
|
1989
|
1,11
|
1990
|
1,07
|
1991
|
1,04
|
1992
|
1,02
|
1993
|
1,00
|
|