Out of 104 IRISL-linked cargo ships surveyed, 62 ships, or 60%, of the total sample, are currently in or near Iranian ports.

FORBES: Iran Sanctions: A Tale of Two Fleets

Percentages below are based on a total sample 5300 likely voters.

FORBES: ZOGBY: Demographics and 2012: Income, Education, Class

By contrast, in July, 2010, in a pattern that until a few months ago appeared roughly the norm, only 28 of these ships, or 27% of the total sample, were in or near Iranian ports.

FORBES: Iran Sanctions: A Tale of Two Fleets