1910    38.860
1911    34.320
1912    23.600
1913    10.160
1914    25.780
1915    20.280
1916    16.860
1917    39.220
1918    24.400
1919     7.320
1920    31.340
1921     9.520
1922    35.240
1923    14.140
1924    32.880
1925    18.400
1926    39.960
1927    15.360
1928     4.040
1929    10.320
1930    18.200
1931    24.120
1932    11.060
1933    15.000
1934    65.200
1935    23.300
1936    11.780
1937     9.420
1938     4.200
1939    28.220
1940    33.920
1941    21.820
1942     7.720
1943    17.700
1944     8.800
1945    13.620
1946     3.880
1947    30.120
1948    40.620
1949     9.440
1950    22.580
1951    30.120
1952     7.800
1953    10.080
1954    20.560
1955    47.980
1956    19.380
1957    25.280
1958    10.540
1959     7.860
1960    11.360
1961    14.880
1962     8.000
1963     7.480
1964    28.000
1965    23.060
1966    14.240
1967    18.160
1968    12.320
1969    13.060
1970     9.140
1971    18.660
1972    20.120
1973    11.380
1974    24.280
1975    28.260
1976     8.460
1977    16.840
1978     8.040
1979     1.200
1980    10.380
1981     4.280
1982    23.540
1983    26.980
1984    27.800
1985     1.360
1986     8.600
1987    41.100
1988    19.840
1989    13.480
1990    13.220
1991    27.420
1992    62.720
1993    28.240
1994    27.720
1995    12.560
1996    23.560
1997    30.600
1998    20.680
1999    17.060
2000     6.600
2001    14.600
2002     7.740
2003    25.980
2004    27.460
2005    32.760
2006    11.960
2007    14.100
2008    11.860
2009     9.960
2010    10.540
2011    47.460
2012    18.500
2013     8.000