Year,US_land_mt,Canada_land_mt,F
1957,7846.00,771.00,
1958,6531.00,1179.00,
1959,8481.00,2378.00,
1960,9932.00,3470.00,
1961,10703.00,4565.00,
1962,11174.00,5715.00,
1963,9038.00,5898.00,
1964,6256.00,5922.00,
1965,1505.24,7052.00,
1966,891.62,7669.00,
1967,1228.98,5025.00,
1968,1049.12,5243.00,
1969,1341.42,4320.00,
1970,1420.64,4097.00,
1971,1333.94,3908.00,
1972,819.08,4177.00,
1973,1077.95,4223.00,
1974,924.99,6137.00,
1975,899.71,7414.00,
1976,1754.72,9780.00,
1977,4738.49,13091.00,
1978,5572.04,12189.00,
1979,6351.00,9207.00,
1980,5552.00,5239.00,
1981,7912.00,8018.00,
1982,6448.00,4330.00,1.43
1983,4527.00,2895.00,0.91
1984,3207.00,2042.00,0.82
1985,2976.00,3851.00,0.64
1986,4516.00,4705.00,0.87
1987,4919.00,6810.00,0.73
1988,6123.00,4405.00,1.11
1989,5799.00,4676.00,1.04
1990,10098.00,5130.00,1.46
1991,9382.00,5833.00,1.69
1992,8362.00,5129.00,1.23
1993,3721.00,6160.00,1.42
1994,1137.95,5003.00,0.37
1995,1018.15,1984.00,0.28
1996,2119.62,2996.00,0.25
1997,2395.30,2932.00,0.20
1998,2118.01,3991.00,0.08
1999,5208.71,3699.00,0.16
2000,4569.00,6813.00,0.10
2001,4955.00,6874.00,0.10
2002,5249.00,6662.00,0.08
2003,5054.00,6184.00,0.09
2004,4018.00,3718.00,0.05
2005,9992.00,2685.00,0.15