Year,Comm_land_kmt,F
1977,,
1978,35.357,0.5404
1979,38.623,0.3469
1980,48.116,0.4882
1981,42.348,0.4654
1982,57.157,0.6482
1983,48.886,0.5804
1984,38.678,0.6438
1985,37.271,0.7386
1986,25.901,0.4903
1987,30.88,0.4781
1988,39.242,0.786
1989,33.098,0.5962
1990,42.503,0.6548
1991,37.63,0.8432
1992,28.567,0.8099
1993,23.113,1.1626
1994,15.169,1.4973
1995,7.859,0.6653
1996,8.905,0.4651
1997,10.434,0.9574
1998,8.832,0.816
1999,9.88,0.6909
2000,9.189,0.546
2001,12.77762,0.5756
2002,10.27631,0.5207
2003,7.971,0.3921
2004,4.583,0.2361