[TeMPOraL]

They seem to be unadjusted. The source link under the picture links to this dataset:

https://docs.google.com/spreadsheets/u/0/d/1TPewJ64QNVtM5sbR...

There's a column there for inflation-adjusted prices, but not much data in it.

[zamadatix]

This seems to support it being adjusted not unadjusted. There is no unadjusted column and the Saturn V is listed as 5400 adjusted which lines up with the graph, if it were the unadjusted number it'd be ~7x off.