"species_id","year","weight" "NL",2001,280 "NL",1987,278 "NL",1989,275 "NL",1979,274 "NL",1987,270 "NL",1987,269 "NL",2000,265 "NL",1981,264 "NL",1987,260 "NL",1987,260 "NL",1987,259 "NL",1984,259 "NL",1983,256 "NL",1987,253 "NL",1982,252 "NL",2001,252 "NL",1981,251 "NL",1984,250 "NL",1989,249 "NL",1983,248 "NL",1988,248 "NL",2002,248 "NL",1982,248 "NL",1987,247 "NL",1990,243 "...",, 100,,