"I am a senior writing my economics capstone on employment in Latin America... I am looking for data from 1990-2005 on Brazil, Bolivia, Chile, Mexico, Argentina, Panama and Peru. I need unemployment, GDP, Exchange rate, real wage, export, import total debt and total asset statistics of each country."
My response:
(1) Since you are concerned with Latin American countries, the first source I think of is UCLA's Statistical Abstract of Latin America, which, unfortunately, is available only in printed form -- not online.
We keep the most recent edition in the Reference collection and the earlier volumes in the stacks.
I think you could get the data you need from looking in several volumes.
(2) Another possibility is the World Bank's World Development Indicators, which we have in printed form and on a CD-ROM.
The advantage to the CD-ROM is that it has extensive time-series data in most categories, meaning you do not need to look at several volumes to get two decades of numbers. Here is a description of WDI.
You can get some idea of what data is in WDI by browsing the 2006 edition in the World Bank site.
Please let me know if the above sources do not do the job.