Elected GOP officials are obliged to scorn this data.

The hottest year's global average are ranked by their record breaking position on the left.  The little chart of over 150 years indicates the total climb is about 1°C, or in excess of 2°F.  Oh is that so much?  Add 2° to your body temp, or your kids, next time you get a fever, add 2°F onto that.  Willing to take that risk?  Plants and animals cannot live in these warmer conditions in the same way or in the same numbers as they do now  
Don't get confused by the chart, the high temps are on the left.All honors and credits to Met.