I don't think you can use a simplistic single trend line this...

I don't think you can use a simplistic single trend line this time around due to currencies no longer being tied to gold. With US printing money it is quite feasible the DJIA rises but effectively ends up lower than in the great depression in value terms.

The only way to compare apples with apples is to look at Dow to Gold ratios. We are currently at around 7:1 (6600/940 DJIA/GOLD) with varying predictions we will go somewhere between 2:1 (great depression) to 4.5:1. How much of that will be Gold prices rising or DJIA falling is anyones guess.