From 1993 to now
Here
These are amounts, not percentages, and I'd have to do a lot of math to make an exact percentage curve out of it, but in 1993 the figure was about 51 percent, not that much larger than now.
Off Topic » in reply to Year to date, (may 2009), OPEC members contributed 47 % of US imports.
Here
These are amounts, not percentages, and I'd have to do a lot of math to make an exact percentage curve out of it, but in 1993 the figure was about 51 percent, not that much larger than now.