July, 18. The International Monetary Fund increased the forecast of world economic growth for 2008-2009, but still feels that it could threaten recession against falling demand in major countries and accelerating inflation. Under the new evaluation of the IMF, the world economy will grow in 2008 at 4.1%, rather than the 3.7% expected in April. In 2009, economic growth will be 3.9% instead of 3.8% expected earlier. In 2007 the world economy grew by 5%. Explaining the revision of the forecast, the IMF chief economist Simon Johnson said that the impact of the credit crisis in the United States has extended to the global economy slower than expected. He added that a set of tax incentives in the United States supports consumption in the country - at least temporarily.