Focusing exclusively on children, a more recent study tracked 81 teenagers for six years.

The figures are from Impact, a trade publication that has tracked the wine industry's performance for many years.

The study will continue until all the women have been tracked for four years.

Four hundred and forty children will be tracked for at least three years.

The researchers also tracked the medical records of the women for 15 years, on average.

But he tracked his man for two years without having any formal training at all.

The gang had been tracked for more than five years, he said.

Do you want the feds tracking us for the next twenty or thirty years?

He plans to track these portfolios for three years and then start a family of mutual funds run by the winners.

I thought I read somewhere that they tracked the people for at least 10 years from 1990 to 2007?