100 Most Popular Keywords of all time - Google AdWord Script

function main() {
  var keywords = AdsApp.keywords()
      .orderBy("Impressions DESC")
      .forDateRange("ALL_TIME")
      .withLimit(100)
      .get();

  Logger.log("100 keywords with most impressions of all time");
  while (keywords.hasNext()) {
    var keyword = keywords.next();
    Logger.log(keyword.getText() + ": " +
        keyword.getStatsFor("ALL_TIME").getImpressions());
  }
}