If I begin to lift weights, how much should I be expected to lift by the end of the first year?

I have always worked out (Tennis, Volleyball etc.) I read where a lot women are beginning to take up weight lifting due to it being good for the bones etc. I do not want to get like a female body builder at all. I probably need a personal trainer. I guess my question is how much should I be expected to bench press at the end of year one. Is there a rule of thumb to go by as far as how much I should increase or not? Any help would be appreciated as I am new to this. Thanks!

If I begin to lift weights, how much should I be expected to lift by the end of the first year?
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