Intro to energy resources and consumption

A line graph titled Price of oil shows time in years on the x axis from the year two thousand to two thousand and twenty. The y axis shows dollars per barrel and ranges from negative fifty to two hundred. The line begins in two thousand one, showing that oil was about forty dollars per barrel. The line oscillates up and down by a few dollars per barrel, but overall it increases until two thousand eight, showing that the price of oil peaked at about one hundred and seventy dollars per barrel. From here until two thousand and nine, the price rapidly decreased to just under fifty dollars per barrel. The price moderately increased from here to about one hundred and twenty five dollars per barrel and stayed around that price until two thousand and fourteen. The price then decreased to about fifty dollars per barrel and remained around that price until two thousand nineteen. From this time until two thousand and twenty, the price rapidly decreased to almost negative fifty dollars per barrel.