Imagine that each red line is a line from a mercury alcohol thermometer which goes from 0 to 120° F as many thermometers do, except they typically go lower, often at about -40°F.
So each red line on this graph represents an annual temp as a thermometer would display it. The source is the GISS data.
Yep, the earth is burning up. Running a fever!!! Quick someone give it an aspirin!!! We should tax ourselves into oblivion because of this.