[crazygringo]

If you're including every amateur unpaid artist, then sure maybe 0.5%.

BUT if you're talking about paid professional TV and film production (the context of SAG-AFTRA), probably something like 95% of content that is written, shot and edited into a final product makes it to audiences. After all, that stuff is expensive.

By the hour, most of that content is TV shows. Most of the unseen ~5% is produced pilot episodes that didn't get picked up for a full season. And a small amount will be films that halted production midway, or turned out to be so bad they weren't released.