What year was asi paratrooper AIR RIFLE made?

I have run across this question befor, This is what I wrote.

It has taken me a long time to answer this question, because I can not find any information about the ASI paratrooper. Apparently is was sold in England and Canada. Today I accidentally found a page that referenced it as the ASI paratrooper/Gamo gamatic 85. When I saw the photo of the ASI and parts manual for the Gamatic 85 I realized that they were the same air rifle.

Apparently they were made in the 1970's