It depends on multiple factors like
1. system / strategy used to trade
2. capital or fund size employed
3. position sizing techniques
4. Type of money managment used
and much more market condition of that period
If you use hyper leverage and agressive compunding then even 100% might looks small but if you ask for consistency then with max drag down of 28 to 42 % if acceptable then one can acheive 15 to 40 % consistently if real market conditions permits