The Operational Efficiency Programme published at Budget 2009 required Departments, their executive agencies and NDPBs to comply with the requirements of category strategies ratified by the collaborative procurement programme for 80 per cent. of available expenditure. In the year to December 2009, £17.9 billion of Government expenditure complied with such strategies. This included a large element of spend channelled through framework agreements drawn up by professional buying organisations (PBOs), the largest of which is Buying Solutions, an executive agency of OGC. In the same period Buying Solutions reported £5.9 billion of spend through its frameworks.