"Fish","Biomass","Year" 28.6,942.54,1970 34.7,969.77,1971 39.3,999.45,1972 32.4,987.13,1973 31.8,976.31,1974 32.8,944.07,1975 38.4,979.37,1976 33.2,997.86,1977 29.7,994.85,1978 25,936.36,1979 21.8,862.85,1980 20.8,815.67,1981 19.7,756.58,1982 20.8,725.27,1983 21.1,662.65,1984 21.3,625.97,1985 24.3,621.69,1986 27.4,589.83,1987 24.5,548.05,1988 25.2,524.88,1989 25.9,529.41,1990 23,497.37,1991 27.1,476.86,1992 23.4,453.8,1993 18.9,402.7,1994 19.6,365.25,1995 25.3,326.02,1996 22,320.12,1997 21,296.49,1998 23,228.72,1999