So far the current score for my 2 rose hair's (sold in store as mexican rose hair) are currently approximately 17 yrs for the female and 9 yrs for the male. Both were about 2 yrs old when we got them. Both have never been bred, and molt more and more infrequently as the years go by. Most books we've looked at over the years show it as being 15-22 years for females.
Also one more note: Though you say you handle your tarantula frequently so I'm sure you know how, it is inadvisable unless you are well trained. Handling can case them stress and thus shorten their life span and lead to health problems, also there is a much higher risk of dropping them!!! These creatures don't need the same affection as other animals and are a very solitary creature. Keep their home comfortable, water dish clean, and they will love you still, honest.
Also one more note: Though you say you handle your tarantula frequently so I'm sure you know how, it is inadvisable unless you are well trained. Handling can case them stress and thus shorten their life span and lead to health problems, also there is a much higher risk of dropping them!!! These creatures don't need the same affection as other animals and are a very solitary creature. Keep their home comfortable, water dish clean, and they will love you still, honest.