 To this day, nobody has had a higher share of adults 18 to 34 years of age than Dr. Ruth. She achieved that in 1980. No one's come close. It's important to note that in 1980-81, FM radios had not proliferated to 100% of the households in America. It was about 60% of the households in New York City had an FM radio. Cars were still not automatically manufactured with an FM radio. You had to request it.