f2WATERYEARN V_FORDN V_FORD_2NN  1951 37.40 1952 45.30 1953 36.10 1954 34.90 1955 25.80 1956 50.60 1957 29.30 1958 56.60 1959 39.16 1960 1961 59.20 1962 29.30 1963 38.20 1964 25.50 1965 36.25 1966 30.40 1967 47.00 1968 34.10 1969 48.50 1970 41.41 1971 38.40 1972 1973 1974 47.70 1975 1976 14.35 1977 11.70 1978 59.30 48.56 1979 23.30 37.34 1980 34.65 55.53 1981 18.75 35.69 1982 50.25 72.85 1983 56.70 81.32 1984 36.55 50.15 1985 30.25 39.03 1986 71.59 1987 40.63 1988 42.69 1989 54.51 1990 22.97 29.61 1991 19.52 37.51 1992 25.71 52.24 1993 36.10 78.86 1994 21.05 37.63 1995 56.12 94.17 1996 35.89 69.15 1997 32.44 60.73 1998 69.44 105.64 1999 36.27 64.03 2000 33.58