I wonder if there is a graph of gas price as a percentage of disposable income. I could not find one anywhere but I strongly suspect that only in Saudi Arabia and Kuwait gas prices will have lower impact on personal income than USA.

Sometimes I catch myself thinking of Peak Oil as "Peak USA". This is the only country in the world which has not recognized yet that oil is depletable resource and that relying on it is equivelent to digging your own grave.

CNN compiled this data from spring of this year:
http://money.cnn.com/pf/features/lists/global_gasprices/price.html

IEA follows certain countries going back for years. Here's their graph:
http://www.eia.doe.gov/emeu/international/gas1.html