[Secret Agent Man]

they receive damage by hurricanes that requires repair, they are shut down in advance and afterwards, and generally depending on the time of the year it results in about a 20% price increase on gas, nationally.

[thackney]

Are you thinking of offshore platforms?

A 20% increase in the national price of gasoline? Care to site what year you thought that happened?

[thackney]

A little help, it wasn't in the last ten year.

Or the last 20 years:

Weekly U.S. All Grades All Formulations Retail Gasoline Prices
http://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=EMM_EPM0_PTE_NUS_DPG&f=W