Trading is a business. Inside of the business of trading are so many different ways to trade and instruments to use. There are equities, derivatives, futures, commodities, position trading, swing trading, scalping, rebate trading...
It is so varied that I think it is very difficult to put a number on what is normal. I think that figuring out how much a "normal" trader makes is the same as asking: "How much can one make starting a business?"
Starting a business you could lose all your money, make $25k a year detailing cars, do well with a nice restaurant, make billions like Bill Gates, and/or fit into every other possible variance of profit and loss including doing well sometimes and poorly at other times.
Also there is a matter of perspective and relativity. Making $85k a year detailing cars out of your pickup truck is probably fantastic while doing the same with a $400M hedge fund is not.