Nielsen has tracked television ratings for all summer and winter Olympic Games broadcasts since 1968.

Ratings data for Olympic Games telecasts from 1968 to 2006 — including ratings for opening and closing ceremonies and average ratings for each Olympics — are available below:

-Average Ratings: all Summer and Winter Olympics telecasts, broken out by daypart (3.36MB)

-Ratings for Opening and Closing Ceremonies: Summer Olympics

-Ratings for Opening and Closing Ceremonies: Winter Olympics