1910    26.380
1911    21.020
1912    26.700
1913     6.220
1914    24.040
1915    23.080
1916    15.620
1917    36.060
1918    10.720
1919    10.040
1920    17.120
1921     6.360
1922    27.120
1923     4.620
1924    18.180
1925    10.880
1926    58.040
1927    11.920
1928    24.120
1929    19.780
1930    13.240
1931    44.820
1932     6.120
1933     6.140
1934    65.080
1935    12.520
1936    15.140
1937     5.220
1938    22.400
1939    16.060
1940    17.660
1941    18.220
1942     9.580
1943     6.780
1944     5.620
1945    11.440
1946     3.280
1947    19.600
1948    38.940
1949     4.180
1950     9.800
1951    12.560
1952     8.640
1953    12.340
1954     5.320
1955    21.960
1956     0.000
1957    14.180
1958    22.420
1959    26.900
1960     9.540
1961     5.880
1962     3.600
1963    22.180
1964    18.380
1965     1.660
1966    17.880
1967    40.860
1968     5.400
1969     8.180
1970    23.660
1971     9.060
1972    18.000
1973     3.240
1974     5.240
1975    32.980
1976    19.240
1977    20.440
1978    20.780
1979     7.200
1980     9.160
1981     3.520
1982    15.920
1983    47.220
1984    16.660
1985     2.320
1986    16.520
1987    21.960
1988    14.900
1989    23.020
1990    16.220
1991    32.140
1992    44.800
1993    28.800
1994     8.080
1995    41.640
1996    21.320
1997    41.540
1998    46.160
1999     3.420
2000    13.440
2001    24.960
2002     7.440
2003    15.360
2004    49.200
2005    22.040
2006    31.200
2007    36.260
2008    26.060
2009    22.300
2010    18.700
2011    37.820
2012    24.280