Since when did technical diving courses become a thing in your country?

[Wibble]

Would be interesting to look back at BSAC courses, say 20 years ago. They almost certainly never mentioned "technical diving", but they did do decompression diving and it went well beyond what's now called "recreational" depths.

Did the term "technical diving" come into use around the time that "recreational diving" became a thing? Defined as max 40m/130ft, no overheads and no deco.

 

[60plus]

In UK people were teaching other recreation divers what we now call tech diving in the late 1960s but I do not know if there were courses or qualifications as such.