Zimbabwe maintained positive economic growth throughout the 1980s (5% GDP growth per year) and 1990s (4.3% GDP growth per year). The economy declined from 2000: 5% decline in 2000, 8% in 2001, 12% in 2002 and 18% in 2003. Zimbabwe's involvement from 1998 to 2002 in the war in the Democratic Republic of the Congo drained hundreds of millions of dollars from the economy. From 1999 to 2009, Zimbabwe saw the lowest ever economic growth with an annual GDP decrease of 6.1%.