Year,Comm_land_kmt,Comm_discd_kmt,F
1935,0.4,0.0,
1936,0.4,0.0,
1937,0.4,0.0,
1938,0.4,0.0,
1939,0.5,0.0,
1940,0.8,0.0,
1941,1.2,0.0,
1942,2.1,0.0,
1943,1.7,0.0,
1944,2.3,0.0,
1945,1.9,0.0,
1946,1.2,0.0,
1947,3.1,0.0,
1948,7.7,0.0,
1949,9.8,0.0,
1950,5.3,0.0
1951,5.8,0.0
1952,5.0,0.0
1953,3.9,0.0
1954,3.9,0.0
1955,3.9,0.0
1956,2.2,0.0
1957,3.1,0.0
1958,6.1,0.0
1959,5.5,0.0
1960,5.9,0.0
1961,5.7,0.0
1962,7.7,0.0
1963,11.1,5.6
1964,14.9,4.9
1965,15.0,4.4
1966,11.6,2.1,
1967,9.8,5.5,
1968,14.7,3.6,
1969,18.7,2.6,
1970,15.9,5.5,
1971,12.5,3.1,
1972,16.4,1.7,
1973,16.2,0.7,0.90
1974,15.6,1.6,1.16
1975,13.3,3.4,1.43
1976,11.3,3.6,1.02
1977,9.5,1.2,1.00
1978,4.6,2.4,0.95
1979,5.5,1.4,0.99
1980,6.6,1.0,0.72
1981,6.2,0.8,1.24
1982,10.6,1.9,1.10
1983,11.5,0.5,0.67
1984,5.8,0.5,1.81
1985,2.5,0.8,1.03
1986,3.1,0.4,0.80
1987,2.8,0.8,1.34
1988,1.9,0.8,1.56
1989,1.2,0.6,0.92
1990,2.8,1.3,0.94
1991,1.9,0.7,1.33
1992,2.9,2.4,1.15
1993,2.8,1.5,1.32
1994,3.7,0.6,1.69
1995,0.9,0.3,0.96
1996,1.2,0.5,0.64
1997,1.8,0.5,0.71
1998,3.0,0.8,0.78,,
1999,4.0,1.1,0.70,,
2000,6.5,0.8,0.89,,
2001,6.7,1.2,0.95,,
2002,5.2,0.7,0.62,,
2003,5.5,1.2,0.58,,
2004,6.3,1.0,1.92,,
2005,3.4,0.8,1.37,,