Okay (upon reflection), maybe 10% of production line jobs could be done by robots in the 1st year, increasing to perhaps 50% after 5 years.
But the overall principle of adding robots to the workforce IS NOT to replace human workers, it is to enhance their value. The number of humans can remain constant, but their productivity is multiplied when freed from dangerous, repetitive, and boring jobs: just train a NN for a robot, turn over the task, and supervise the work. Eventually, just check the results.
Humans will have the greatest value as teachers, trainers, and problem-solvers. New and better techniques to do a job (or even to eliminate the need for the task), is what we humans do best.
Cheers!