1910    16.080
1911    20.860
1912    27.100
1913    25.040
1914    38.880
1915    14.440
1916    19.280
1917    45.240
1918    17.240
1919     1.060
1920    24.920
1921    30.460
1922    14.960
1923    27.020
1924    52.340
1925     9.840
1926    45.900
1927     7.780
1928    15.220
1929     7.360
1930    16.520
1931    33.300
1932    13.560
1933    10.720
1934    21.720
1935    17.140
1936    10.700
1937    11.880
1938    12.000
1939     5.660
1940    38.500
1941    21.860
1942    12.420
1943    15.420
1944     6.720
1945    20.780
1946    17.980
1947     7.380
1948    11.540
1949    37.340
1950    16.780
1951     5.740
1952    17.700
1953    38.360
1954    19.940
1955    12.980
1956    12.600
1957    21.600
1958    29.480
1959     0.000
1960     8.020
1961     3.920
1962    16.040
1963    25.140
1964    17.160
1965    14.960
1966    13.800
1967     5.480
1968     6.400
1969     2.720
1970     3.520
1971     5.580
1972    44.100
1973    28.560
1974     9.240
1975    14.660
1976    21.920
1977    15.220
1978    35.020
1979    19.500
1980     9.260
1981     4.900
1982     6.520
1983     8.160
1984     4.400
1985    14.620
1986     6.020
1987     5.280
1988     8.120
1989    16.960
1990    49.200
1991    37.860
1992    18.700
1993     5.680
1994    10.460
1995     7.820
1996    29.920
1997     8.700
1998    51.360
1999    39.160
2000    12.000
2001    36.820
2002    34.820
2003    32.280
2004    25.840
2005    29.900
2006    63.360
2007    19.680
2008    35.140
2009    21.680
2010    39.000
2011    72.200
2012    49.540