In nominal terms the market is trading at levels first reached in 1996 and last seen in 1997. But let's get real about that. Adjust for inflation. You could use the government's perverted numbers if you have a hole in your head where your brains used to be. By that measure your down roughly 25%. We all know that inflation has been running leaps and bounds above what they can admit to. If you estimated inflation in a more honest way, including housing, food and energy for example you're down around 60-70%.
Think about how much you could buy in 1996 compared to 2009. How many things that you depend on, not luxuries and frills---the necessities of life---- are double and triple what they were 10-15 years ago?
I rest my case.