In 2001 the United States Library of Congress deemed the film "culturally significant" and selected it for preservation in the National Film Registry.
... spread out with 22.3% under the age of 18, 8.0% from 18 to 24, 31.0% from 25 to 44, 21.9% from 45 to 64, and 16.9% who are 65 years of age or older. The median age is 39 ...