The UN website, one of the major sources for business and statistical information has revamped their site. The new UN Data page contains 55 million country records in agriculture, education, energy, industry, labor, national accounts, population and tourism.
To find information type your keywords and narrow your search results by using pre-selected filters on the left ( Take a look below).
The image is taken from ReadWriteWeb
Statistical information can be found also via advanced search, country profile or by browsing the different data series in the explorer section.
If you need any kind of data on a country, this site is a definite stop for you.