With Already 94% Decline from Its Peak, Is The Greek Equities Index, the Largest Bear Market in History?

During the Great Depression, the Dow declined 89% from the peak to finally find the bottom.

The GRE ETF hit today 0.875€/share, which means that it is now somewhere about 94% down from the peak. At this price, I'm a buyer. Unfortunately, I wasn't in front of my screen today, so I missed on the opportunity — for now, as this market seems to be bottomless!

Is this the largest bear market in history?
Are you aware of any worse peak to trough performance for a flagship equity index?
With the Greater Depression unfolding before our eyes, are other equity indices on the same path, with Greece just taking the leading?