Year,Spring_kg_tow,Fall_kg_tow,MADMF_spring_kg_tow,MADMF_fall_kg_tow
1977,0.57,7.53,,
1978,0.21,2.05,10.16,2.80
1979,0.80,2.60,11.38,7.33
1980,2.43,6.56,10.03,5.90
1981,2.47,1.88,16.35,2.76
1982,2.81,2.06,12.85,4.20
1983,2.34,0.26,9.00,3.39
1984,0.81,1.38,7.37,1.18
1985,0.62,1.58,5.21,1.17
1986,0.47,0.97,4.52,1.36
1987,2.97,0.56,3.67,1.09
1988,1.08,1.13,3.83,3.71
1989,0.86,2.20,4.73,1.52
1990,1.95,2.35,6.60,4.16
1991,1.78,1.20,3.32,3.23
1992,0.76,1.93,6.54,2.00
1993,0.50,1.11,4.60,3.99
1994,1.20,2.70,6.23,3.27
1995,2.04,0.78,10.38,5.75
1996,1.11,2.61,9.25,1.56
1997,1.31,2.28,7.55,2.10
1998,1.16,1.64,5.17,2.68
1999,1.98,5.98,5.08,4.71
2000,9.51,3.47,20.37,3.46
2001,2.29,1.89,19.34,3.55
2002,3.69,0.71,7.43,1.63
2003,1.91,3.44,8.15,4.00
2004,1.08,0.49,4.63,5.69
2005,1.42,,7.95,