yearsworth

From year +‎ -s- +‎ -worth.

yearsworth (uncountable)

1. The amount of something that is expected to last for or be produced in one year.
   • 1967, Water and Water Engineering:

     We've given a million pounds to these waterworks and we shan't live to use more than (say) fifteen yearsworth of them.

   • 1994, Bradford Morrow, Conjunctions, Random House Inc, →ISBN:

     So she writes ten yearsworth of practice-fiction without making noteworthy progress except in language-mechanics and the range of her vocabulary, meanwhile accumulating mileage on her experiential odometer

   • 1997, John Barth, The Tidewater Tales, Taylor & Francis, →ISBN, page 313:

     He didn't look like my father or my brother, Kath; he was my clone, only older. He didn't look like what I look like now, seventeen yearsworth of stories later; he looked like what I'll look like another twenty-some yearsworth of stories from now