The new study tracked the health of 122,000 women since 1976.

We have been tracking this important issue together here since 1994.

The group has tracked the research budget since 1989, but not everything was brought under its umbrella until 1991.

The site has been tracking this data since June 2009 for over 486,000 bands.

Has anybody been tracking the number of articles over time since the beginning?

The binary nature of this system has been tracked since 1796.

The immigration service has been tracking the ring since April 1992, she said.

I've been tracking your every movement, both by myself and with agents, since the beginnings of our association.

A variety of different reports have tracked rate increases since deregulation.

Of the 147 violent deaths in schools tracked by the school safety center since 1992, 119 have been from guns.