Year,Comm_land_mt,Rec_land_mt,Comm_discd_mt,Rec_discd_mt,F
1960,9565,,,,
1961,8801,,,,
1962,7014,,,,
1963,6177,,,,
1964,5551,,,,
1965,4588,,,,
1966,6400,,,,
1967,5865,,,,
1968,4106,,,,
1969,3037,,,,
1970,4019,,,,
1971,4242,,,,
1972,4183,,,,
1973,7328,,,,
1974,10243,,,,
1975,11934,,,,
1976,15135,,,,
1977,13575,,,,
1978,12966,,,,
1979,17945,,,,
1980,14159,,,,
1981,9551,,,,
1982,10400,8267,,296,0.94
1983,13403,12687,,376,2.15
1984,17130,8512,,415,1.24
1985,14675,5665,,92,1.36
1986,12186,8102,,578,1.59
1987,12271,5519,,522,1.06
1988,14686,6733,,342,2.07
1989,8125,1435,709,45,1.90
1990,4199,2329,1214,234,1.65
1991,6224,3611,1052,429,1.58
1992,7529,3242,690,344,1.41
1993,5715,3484,846,736,0.98
1994,6588,4111,906,577,1.32
1995,6977,2496,308,714,1.24
1996,5770,4704,463,615,1.16
1997,3994,5378,326,627,1.24
1998,5080,5659,389,517,0.97
1999,4820,3795,1548,688,0.99
2000,5085,7090,726,855,0.86
2001,4970,5278,468,1216,0.65
2002,6573,3610,449,676,0.46
2003,6450,5265,528,684,0.43
2004,7748,4841,244,993,0.40
2005,7765,4550,230,899,0.41