DID I CRACK IT?
I think I figured out at least a chunk of the math.
It's trade deficit divided by their exports.
EU: exports 531.6, imports 333.4, deficit 198.2. 198.2/531.6 is 37, close to 39.
Israel: exports 22.2, imports 14.8, deficit 7.4. 7.4/22.2 is 33.