Trunk lock broke - how to open the trunk?

Okay my friends. Thank you very much for your messages! I've gone the difficult way and removed the bench. I was able to open the trunk from inside. I've read it is very common to "loose" the pin in the lock mechanism - same situation for me. The pin is lost, so this caused my lock to not open anymore. I think it's stupid to just buy a pin instead of a new lock.

Anyway, again, thank you guys for helping me! I might upload a step-by-step thread with pics on disassembly the rear bench if needed.
Glad you were able to get in the trunk and get it open. I figured I would wait until you finished to tell you that I had to do that once with a 69 Dodge Charger R/T that I dragged in. While I was crawled into the trunk and removing the lock, I felt something start crawling across my neck. I knew immediately what it was and thought it would never stop! When I got the lock removed and the trunk lid opened, over in the corner was an adult black snake around 4 feet long! It was just as scared of me as I had been of it when it crawled across my neck, so I got some gloves and got it out of the car. It lived nearby for maybe 5 years before a Hawk killed it.