"The amount seized is itself not necessarily a useful measure of effectiveness," the senators said.

But exactly the opposite has happened over the last decade - the greater the amounts seized, the more the price has fallen.

The amount of cocaine seized was more than has ever been found in one place before or since.

The amount of drugs seized was relatively small and appeared to be for personal use.

The total is more than double the amount seized in the province in 2005.

The amount of heroin seized in Texas by federal law enforcement authorities has increased over the past 5 years.

It also observed that enormous amounts of information seized in raids had not been evaluated.

The amount seized was, according to Peruvian sources, 80,000 or $400,000.

The police seized 15,520 pounds last year, or triple the amount seized five years ago.

The amount of power ministers had seized for themselves over the development of young people was also worrying.