From the early 1960s to 2002,the mean weight for men and women aged 20-74 years increased 24 pounds, and the mean height increased approximately 1 inch. During 1999-2002, or the mean weight of men aged >20 years was approximately 190 lbs. and the mean height was approximately 5 ft.,9 in.; among women, the mean weight was approximately 163 lbs. and the mean height was approximately 5 ft., or 4 in.
Source: cdc.gov