1910    22.020
1911    22.560
1912    10.400
1913    20.900
1914    13.260
1915    14.420
1916    31.580
1917    32.600
1918    15.760
1919     6.760
1920    15.100
1921    43.680
1922    13.820
1923    40.800
1924    30.160
1925    17.300
1926    50.000
1927     7.580
1928    25.540
1929    17.280
1930     9.680
1931    14.480
1932    26.560
1933    10.900
1934    13.620
1935     9.380
1936    18.280
1937    12.300
1938     3.480
1939    13.860
1940    33.860
1941    22.660
1942    38.580
1943    27.920
1944     6.280
1945    46.040
1946    21.280
1947    18.640
1948    13.640
1949     3.840
1950    34.480
1951     7.960
1952    14.380
1953    28.880
1954    16.320
1955    14.020
1956    46.460
1957    11.860
1958    10.460
1959     3.280
1960     8.740
1961    11.700
1962    15.020
1963     6.680
1964    11.720
1965    15.600
1966    10.560
1967    28.460
1968     8.740
1969     9.000
1970     4.760
1971    22.480
1972    10.000
1973    43.580
1974    12.540
1975     8.480
1976    12.820
1977    45.720
1978     6.900
1979    16.940
1980    10.120
1981     7.260
1982     5.800
1983    26.140
1984    40.920
1985    25.840
1986    25.820
1987    26.240
1988     3.700
1989    12.360
1990    13.940
1991    46.560
1992     9.760
1993    14.860
1994     6.680
1995     4.240
1996    13.680
1997    20.900
1998    42.560
1999    14.500
2000    42.920
2001    12.380
2002    17.960
2003     9.500
2004    29.180
2005    16.900
2006    26.120
2007    25.040
2008    21.580
2009    15.820
2010    62.020
2011    53.220
2012    45.660