In 2000, I averaged almost exactly 1% a day, although most of the gain was probably in the top 20 days out of 250 trading days.
If you can average 1% a day for the year (about 250 trading days), then your original account will grow by about 1200% if the gains are spread out evenly and you use your full account.
APY = (1 + 0.01/day)^250 days = (1.01)^250 = 12 = 1200%
In 2001, after a gangbuster start (Jan 3rd surprise 50 bps rate cut, thank you greenspan!), I didn't even make 100% APY, much less 1200%, due to law of large numbers (7 figure acount), falling prices (no more QCOM up 20 points in a day), taking less risk, and I no longer trade 100% of my account.
I'm more focused on the absolute dollar gain. The % this, % that numbers are fun to look at, but it doesn't mean much because it is all relative to your acount size.
Fleance