Mike Holt has a chart

http://www.mikeholt.com/documents/nec/pdf/GFCI_requirement_page2.pdf

Basically the first use was receptacles near pools and outside (1971) Bathrooms came in 1975.
It expanded every cycle since.

Most jurisdictions have some lag time between new cycles being released and adoption. In Florida we are usually at least one cycle behind because of the difference in ICC building code cycles and NEC cycles along with the bureaucratic inertia of getting things adopted


Greg Fretwell