Price of propane

[papaof2]

Do a search for
Weekly StateName Propane Residential Price

Look for a URL like www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=W_EPLLPA_PRS_SNC_DPG&f=W

Or just copy the above URL and replace the NC (North Carolina) with the two letter state ID of interest.

Different states go back a different number of years. NC to 1990, AL, GA and TX to 2014, YMMV.

[feralferret]

Interesting graph there.

[papaof2]

You can download that state's data as a spreadsheet (link near top of page) or you can manipulate in several ways from the selection box near the top of the chart.