{"year":1950,"Oil":80.7,"Gas":11.7,"Bit.":34.5,"Anth.":69.9}
{"year":1951,"Oil":76.4,"Gas":11.6,"Bit.":32.9,"Anth.":70.4}
{"year":1952,"Oil":75.3,"Gas":12.1,"Bit.":32.3,"Anth.":67.2}
{"year":1953,"Oil":78.5,"Gas":13.9,"Bit.":32,"Anth.":68.3}
{"year":1954,"Oil":80.4,"Gas":15.3,"Bit.":29.1,"Anth.":59.8}
{"year":1955,"Oil":78.6,"Gas":15.3,"Bit.":28.4,"Anth.":53.6}
{"year":1956,"Oil":76.6,"Gas":15.4,"Bit.":29.6,"Anth.":54.5}
{"year":1957,"Oil":82.1,"Gas":15.7,"Bit.":30.2,"Anth.":57.9}
{"year":1958,"Oil":78.6,"Gas":16.2,"Bit.":28.3,"Anth.":56.5}
{"year":1959,"Oil":74,"Gas":17.2,"Bit.":27.5,"Anth.":51.9}
{"year":1960,"Oil":72.3,"Gas":18.3,"Bit.":26.6,"Anth.":48}
{"year":1961,"Oil":71.8,"Gas":19.6,"Bit.":25.8,"Anth.":48.8}
{"year":1962,"Oil":70.8,"Gas":19.8,"Bit.":24.8,"Anth.":46.5}
{"year":1963,"Oil":69.5,"Gas":20,"Bit.":24,"Anth.":49.8}
{"year":1964,"Oil":68.3,"Gas":19.2,"Bit.":24,"Anth.":50.8}
{"year":1965,"Oil":66.3,"Gas":19.1,"Bit.":23.5,"Anth.":47.5}
{"year":1966,"Oil":64.7,"Gas":18.5,"Bit.":23.3,"Anth.":43.9}
{"year":1967,"Oil":63.6,"Gas":18.3,"Bit.":23.3,"Anth.":43.9}
{"year":1968,"Oil":61.4,"Gas":17.8,"Bit.":22.5,"Anth.":45.6}
{"year":1969,"Oil":61.4,"Gas":17.4,"Bit.":23,"Anth.":48.7}
{"year":1970,"Oil":59.9,"Gas":16.9,"Bit.":27.9,"Anth.":51.5}
{"year":1971,"Oil":60.8,"Gas":17.2,"Bit.":30.4,"Anth.":53.5}
{"year":1972,"Oil":58.4,"Gas":16.9,"Bit.":31.9,"Anth.":52.9}
{"year":1973,"Oil":63.5,"Gas":18.7,"Bit.":33.6,"Anth.":55.7}
{"year":1974,"Oil":102.9,"Gas":24.1,"Bit.":57.7,"Anth.":85.5}
{"year":1975,"Oil":105.1,"Gas":32.3,"Bit.":65.9,"Anth.":109.6}
{"year":1976,"Oil":106.7,"Gas":40.1,"Bit.":63.4,"Anth.":112.6}
{"year":1977,"Oil":105.5,"Gas":51.6,"Bit.":62.3,"Anth.":107.4}
{"year":1978,"Oil":103.2,"Gas":55.3,"Bit.":64.6,"Anth.":99.7}
{"year":1979,"Oil":133.3,"Gas":66,"Bit.":64.1,"Anth.":106.5}
{"year":1980,"Oil":204.5,"Gas":81.7,"Bit.":59.4,"Anth.":105.5}
{"year":1981,"Oil":273.6,"Gas":96,"Bit.":57.4,"Anth.":104}