Year,Fall_num_tow,Fall_kg_tow 1975,10.043,6.108 1976,64.983,6.914 1977,97.032,8.418 1978,15.929,7.156 1979,53.599,8.662 1980,44.624,6.957 1981,287.869,20.983 1982,29.706,3.894 1983,25.852,4.074 1984,124.003,9.654 1985,28.748,4.2 1986,22.165,3.857 1987,10.068,3.008 1988,9.636,1.504 1989,239.204,11.681 1990,9.945,3.051 1991,8.111,1.52 1992,7.312,1.327 1993,1.336,0.656 1994,7.426,1.611 1995,13.576,2.184 1996,11.704,2.473 1997,5.007,1.079 1998,5.316,1.054 1999,16.934,2.696 2000,4.197,1.152 2001,9.748,1.612 2002,9.104,1.668 2003,51.784,3.274 2004,12.857,3.042 2005,25.081,3.729