The table illustrates the number of visitors, in millions, to four national museums in the USA in 2005, 2010, and 2015. It also includes the percentage changes between these years.
Overall, all museums except the American Indian Museum saw an increase in visitors from 2005 to 2010, followed by a decline in 2015. The National Museum had the highest number of visitors across all three years, while the American Indian Museum consistently had the lowest.
In 2005, the National Museum attracted 25 million visitors, increasing to 31 million in 2010, a 20% rise, before dropping slightly to 29.2 million in 2015. Similarly, the Air and Space Museum rose from 6.1 million to 8.3 million in 2010, showing a 36% increase, but dropped to 6.2 million in 2015, a 25% decrease.
The Natural History Museum had a modest growth of 21% from 5.6 million to 6.8 million in 2010, then declined by 9% to 6.2 million in 2015. The American History Museum followed a similar pattern, growing by 40% from 3 million to 4.2 million in 2010, then falling to 3.6 million.
In contrast, the American Indian Museum experienced a consistent decline. Visitor numbers fell by 41% from 2.2 million in 2005 to 1.3 million in 2010, and further decreased by 15% to 1.1 million in 2015.