A more telling metric on noise-induced damage would be your response between 1kHz and 4kHz as that's the range where our ears are most sensitive and where most noise-related damage occurs. Miraculously, I can still hear up to 16kHz and my last hearing test showed a -0.5dB dip around 4kHz on the right side. Otherwise, my sensitivity is 5dB better than average for my age group. I'm 42 and have been playing in bands and mixing sound for 23 years now, including several years touring at the arena/shed level as a sound engineer, with I think rather a lot of exposure to loud music. How I don't have tinnitus or major hearing damage is beyond me. I was pretty reckless about it when I was younger, pretty paranoid about it now. Always carry earplugs and if I'm not actually mixing or playing, they're in.