1903
0.102
1904
0
1905
7.248
1906
2.2
1907
1.428
1908
1.409
1909
2.022
1910
1.563
1911
1.957
1912
3.198
1913
4.05
1914
2.641
1915
2.602
1916
0.534
1917
0.339
1918
0.451
1919
2.659
1920
4.396
1921
5.321
1922
5.401
1923
5.655
1924
6.355
1925
6.719
1926
7.277
1927
8.395
1928
9.522
1929
9.32
1930
11.914
1931
11.838
1932
16.726
1933
20.244
1934
20.378
1935
22.266
1936
20.925
1937
23.93
1938
18.196
1939
20.119
1940
9.428
1941
8.74
1942
10.625
1943
8.181
1944
8.151
1945
6.776
1946
10.895
1947
16.893
1948
19.491
1949
23.01
1950
24.75
1951
35.301
1952
40.55
1953
38.206
1954
40.57
1955
43.127
1956
46.951
1957
45.57
1958
50.394
1959
47.394
1960
53.997
1961
57.721
1962
57.256
1963
62.288
1964
60.146
1965
49.336
1966
42.713
1967
44.116
1968
56.043
1969
52.074
1970
47.557
1971
45.653
1972
50.416
1973
49.412
1974
45.684
1975
44.119
1976
44.064
1977
42.252
1978
47.235
1979
38.201
1980
40.968
1981
39.961
1982
32.402
1983
37.046
1984
35.193
1985
38.674
1986
30.91
1987
42.335
1988
35.569
1989
30.278
1990
29.906
1991
29.562
1992
29.046
1993
25.636
1994
20.851
1995
21.318
1996
17.294
1997
15.347
1998
13.919
1999
12.384
2000
15.89
9.47
2001
16.693
8.87
2002
11.02
7.1
2003
12.246
5.64
2004
9.365
4.472
2005
8.356
1.136
2006
4.054
1.051
2007
2.853
3.669
2008
1.759
2.635
2009
2.557
1.422
2010
1.248
2011
0.58
2012
0.261
2013
0.332