The chart below shows the numbers of three types of visitor to a museum between 1997 and 2012.

The chart indicates the number of visitors to a museum over 15 years up to 2012, categorized into three groups.

Overall

, the diagram proclaims that adults were the largest

group

of invitees,

while

special callers made up the most undersized percentage. Focusing on adults as the largest

group

, by a glance throughout the illustration,

it is clear that

grown-ups with at least 300,100 visits in 1997 were in the first

group

;

also

,

this

pattern continued within that time. In 2007, an upturn took place in the figure and

this

number surged to more than 400,00 visitants, which was the peak of

this

scheme.

Moreover

, during the next five years, it dropped to 380,000 in 2012 which was still the maximum amount in comparison with the other visitor cohorts. Turning to the special exhibition entrants and adolescents, it can be seen that the former was the smallest

group

from 1997 to 2012 and the growth of sightseers number was deeply negligible; so,

at the end

of the study, only 14,000 people were added to the initial comers.

On the other hand

, the latter was 120,000 at

first,

which was noticeable;

then

, it started to level off gradually to approximately 82,000 folks in 2012.