The planet’s average surface temperature has risen about 2.0 degrees Fahrenheit since the late 19th century, a change driven largely by increased carbon dioxide and other human-made emissions into the atmosphere …

Most of the warming occurred in the past 35 years, with 16 of the 17 warmest years on record occurring since 2001. (NOTE: This article was written in early 2017).

 

https://www.giss.nasa.gov/research/news/20170118/