1910    58.820
1911    21.240
1912    34.240
1913    19.040
1914    18.200
1915    22.460
1916    22.060
1917    50.880
1918    10.360
1919     9.560
1920    30.440
1921     9.400
1922    13.100
1923    15.480
1924    26.020
1925    18.040
1926    16.920
1927    16.620
1928    20.180
1929    13.760
1930     7.880
1931    10.600
1932     7.380
1933     6.720
1934    53.220
1935    30.120
1936    12.900
1937    16.780
1938    14.140
1939    18.660
1940    17.960
1941    18.560
1942    12.340
1943    14.520
1944    14.060
1945    10.720
1946    25.900
1947    11.660
1948    10.140
1949     8.900
1950    30.880
1951    29.420
1952    13.920
1953     8.480
1954    15.280
1955    31.740
1956    12.200
1957    13.640
1958    10.460
1959     6.960
1960    15.700
1961    13.500
1962     9.700
1963     4.860
1964    14.160
1965    33.800
1966     9.220
1967    12.060
1968     2.780
1969    10.160
1970    17.040
1971     7.440
1972     9.220
1973    15.200
1974     8.040
1975    32.020
1976     9.140
1977    29.660
1978     8.900
1979    11.760
1980    18.100
1981    31.080
1982    11.240
1983    20.760
1984    14.440
1985    31.000
1986    25.780
1987    40.780
1988    25.760
1989    17.280
1990    15.100
1991    21.600
1992    33.720
1993    12.500
1994    34.500
1995    29.040
1996    33.660
1997    13.980
1998    10.620
1999    18.320
2000    24.300
2001    22.040
2002    31.380
2003     8.120
2004    33.940
2005    10.680
2006    13.180
2007    39.940
2008    16.180
2009    13.400
2010    24.960
2011    38.220
2012    40.780
2013    34.680