The most important sources with global arms export figures
In English Defence and Peace Economics Resources on the Internet.

In English Database about arms export in 170 countries:  www.ruestungsexport.de
In English Conventional Arms Transfers to Developing Nations, (1997-2004) and 1996-2003 on the website of the US Department of State. In English On the UNDP (United Nations Development Programme) website you can find several overviews of military expenses.
In English World Military Expenditures and Arms Transfers (wmeat) reports. In English Defence Expenditures of NATO Countries (1980 - 2003) on NATO website
In English SIPRI Arms Database In English  VN-register conventionele bewapening
In English  UN Commodity Trade Statistics Database (UN Comtrade) In EnglishWorld Development Indicators: Economy by the Worldbank
In EnglishSanctions or restrictive measures in force
(measures adopted in the framework of the CFSP)		 In English  Middle East Military Balance
Overview of inventories of weapons and major demographic and political information.
In EnglishNews and Articles on European Aeronautic Defence and Space Links of the Dutch Ministry of Defence
(for example: ministries of Defence worldwide, magazines, NATO etc.)