Statistical Data on phone usage and ICT

Ever wanted to cite the number of "Mobile cellular subscriptions per 100 inhabitance" in Albania, Algeria, Argentina, Armenia, Australia, …., United States, Uruguay, Uzbekistan, Venezuela, Viet Nam, Yemen, Zambia or Zimbabwe? Or the spending on mobile telephony or the computer penetration in these countries? Then the website I just came across may be interesting for you too: http://measuring-ict.unctad.org/

Here are the direct links to documents containing data:

• Measuring the Information Society - ICT Development Index
• The Global Information Society: a Statistical View

Some of the figures seem really high to me - but I have not looked into detail. They have also publish a handbook on how to measuring ICT access and uses:
MANUAL for Measuring ICT Access and Use by Households and Individuals