Year,South_land_mt,B_index_kg_tow,BMSY_proxy_kg_tow 1963,,3.724,1.848 1964,61,5.486,1.848 1965,79,5.163,1.848 1966,69,6.986,1.848 1967,59,1.122,1.848 1968,36,0.85,1.848 1969,43,1.138,1.848 1970,53,1.357,1.848 1971,53,0.786,1.848 1972,65,4.918,1.848 1973,240,1.986,1.848 1974,183,0.71,1.848 1975,417,2.043,1.848 1976,608,1.084,1.848 1977,"1,314",1.873,1.848 1978,"2,073",1.395,1.848 1979,"4,697",2.275,1.848 1980,"6,035",1.868,1.848 1981,"4,142",2.858,1.848 1982,"3,722",0.646,1.848 1983,"4,115",2.15,1.848 1984,"3,699",0.74,1.848 1985,"4,262",1.318,1.848 1986,"4,037",0.552,1.848 1987,"3,762",0.274,1.848 1988,"4,595",0.554,1.848 1989,"8,353",0.625,1.848 1990,"7,204",0.426,1.848 1991,"9,865",0.783,1.848 1992,"13,942",0.312,1.848 1993,"15,098",0.294,1.848 1994,"12,126",0.611,1.848 1995,"14,625",0.386,1.848 1996,"16,032",0.387,1.848 1997,"18,534",0.592,1.848 1998,"19,309",0.5,1.848 1999,"15,953",0.304,1.848 2000,"10,191",0.477,1.848 2001,"9,801",0.709,1.848 2002,"8,866",1.253,1.848 2003,"10,963",0.828,1.848 2004,"7,945",0.742,1.848 2005,,,1.848