Year,R_index_num_tow_fall,Avg_wt_kg_fall
1963,2.91,0.24
1964,2.76,0.21
1965,5.18,0.19
1966,9.48,0.12
1967,1.09,0.22
1968,1.98,0.22
1969,3.64,0.22
1970,5.04,0.16
1971,4.99,0.15
1972,6.72,0.16
1973,6.67,0.13
1974,13.89,0.04
1975,8.84,0.16
1976,4.01,0.17
1977,1.53,0.26
1978,2.32,0.21
1979,3.05,0.19
1980,6.23,0.17
1981,5.56,0.16
1982,1.28,0.21
1983,1.81,0.21
1984,2.48,0.16
1985,31.03,0.06
1986,2.48,0.14
1987,2.17,0.14
1988,4.52,0.1
1989,1.76,0.16
1990,1.93,0.15
1991,2.84,0.18
1992,1.94,0.14
1993,3.82,0.12
1994,7.27,0.08
1995,7.29,0.05
1996,1.41,0.12
1997,1.37,0.15
1998,1.82,0.13
1999,14.91,0.03
2000,0.74,0.18
2001,8.91,0.05
2002,5.89,0.07
2003,4.17,0.08
2004,4.54,0.06
2005,8.33,0.06