The chart below shows the numbers of three types of visitors to a museum between 1997 and 2012. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The given bar graph describe the three type of visitor that are adult visitors, visitors aged under 15 and special exhibition visitors which were visit a museum from 1997 to 2012. At the first glance it is clear that, maximum guest that were visit the museum belong the category of special exhibition in all years. […]