In 2007-08, HM Revenue & Customs (the Department) processed some 22 million import declarations from 16,000 traders, accounting for over £186 billion of goods imported from outside the European Union (EU). It collected £2.5 billion in Customs Duty and £19.3 billion in Import VAT. Some 99 per cent of declarations are submitted electronically and the Department clears around 90 per cent of imports without further check beyond its initial system scrutiny. The Department provides services to help traders navigate the extremely complex classifications, rules and procedures (set by the EU), but traders find it difficult to comply, and simple errors can lead to demands for large back duty payments. The Department controls imports by undertaking documentary checks, physical checks at the frontier (now done by the UK Border Agency), and trader audits. Most effort is directed to documentary checks and trader audits, yet the number of these has fallen significantly even though the number of consignments has increased, and the rate of physical examinations of goods at the frontier was well below the EU average of 9%. The number of trader audits halved between 2005-06 and 2007-08, leading to reduced revenue from this work, while levels of non-compliance increased. The Department's management of customs work and risk assessment is spread across eight directorates and, since April 2008, the UK Border Agency. Poor management information has hindered effective oversight of performance and risk management. In 2007, the Department established the Customs Strategy Delivery Group to improve its strategic and operational management of customs activities.