Economic growth ( 3.6 per cent in 2004 ) stood at 7.7 per cent in 2005 and 6.4 per cent in 2006 , before dropping back down to -1.6 per cent , owing to a major decline in oil production in 2007 . The Congo has experienced a budget deficit since 2006 ; this in turn has halted implementation of the Poverty Reduction and Growth Facility ( PRGF ) -supported programme and establishment of a staff-monitored programme .