If the traffic doesn't go up significanly, the shortest string increase will drop exponentially. Even with only the last 5 years, you can observe it's slowing d

If the traffic doesn't go up significanly, the shortest string increase will drop exponentially. Even with only the last 5 years, you can observe it's slowing down, and that's with an hefty amount of traffic increase to back it up. 128 bits is super safe for a long long time !