Since the list was... long... I decided to limit it to scores which were nominated for Academy Awards.
Also, some ambiguity exists around when a score is released (as compared to the movie) the 'Year' indicates the Academy Award year.
See the description. Somehow the theme for Jurassic Park was not nominated for an Academy Award, which leads me to believe that the Academy that year was simply not human. The soundtrack was nominated for a Grammy, but didn't win that either.
Maybe because Williams was nominated (and won) for Schindler's List that year. Possible that people didn't want to split the vote by nominating both of them?