Framingham, Mass.--Customer relationship management services will burgeon from $6.1 million in 2001 to $148 billion in 2005, according to a just-released study by International Data Corp. The research company predicted a compound annual growth rate of 25%, regardless of a weakening in the economy. Today, the largest CRM services market is in managing the operation of a CRM marketing system, with businesses paying third parties $32 billion last year for the services. That market is projected to grow to $82 billion by 2005. CRM training services were second with $2.9 billion in 2000 spending, a total that is expected to reach $11 billion by 2005.