1/3 Less Commercials
For every 10 hours of TV that Americans watch, three hours are taken by commercials. In the UK and much of Europe, there's a limit on the amount of adverts shown of 8 minutes per hour of television during prime times. Instead of seeing 3 minutes of commercials every 8 minutes, UK viewers see 4 minutes every half hour.
BTW, #18 is not 100% true. We pay more taxes than we need to the rest of the year to compensate for this. This is an old odd thing created so people could have more money for Christmas.