There have been accusations of systematic attempts to undermine jury trials, including juror intimidation and bribery, and systematic trial delays. The number of jury trials remains small, at about 600 per year, out of about 1 million trials. Lawmakers are continuously chipping away at what types of criminal offenses merit a jury trial. Juries have granted acquittals in 15-20% of cases, compared with less than 1% in cases decided by judges. Juries may be dismissed and skeptical juries have been dismissed on the verge of verdicts, and acquittals are frequently overturned by higher courts.