The chart below shows male and female fitness membership between 1970 and 2000.Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram illustrates changes in fitness membership, classified by sex, from 1970 to 2000.

At a glance it is very clear that there are no linear trends, either for male or female membership, throughout the whole period. Although the volatile tendencies, some minor increases and decreases can be found for both sexes. About women, values are always within a range from 1,000 to 1,000, with the minimum shown in the initial year and the maximum reached both in 1985 and 1995 at almost 2,800 members. At opposite, men trend ranged between 1,000 and 5,000, assuming more volatile values if compared to women. In detail, a first rise between 1970 and 1975 was followed by a sudden decrease until 1985, when values went up again dramatically in 1995 to then dropping at the minimum record in 2000.

The overall trend fluctuated in a relevant way throughout the three decades considered, with sudden peaks in 1975 and 1995 that anyway didn’t change the total memberships recorded at the beginning and at the end of the period. In fact, the reverse partition between males and females is the only difference from 1970 and 2000.