I have found and lost this data set a number of times. This comes from NASA, showing a non-linear (quadratic) trend to climate change data with seasonal variation each year. This is the data to generate their graph.

[iframe width="640" height="480" frameborder="0" seamless="seamless" scrolling="no" src="https://plot.ly/~noelevans/9.embed?width=640&height=480"]