a 15.2% growth rate. Similarly, Nouriel Roubini predicted in January 2009 that oil prices would stay below $40 for all of 2009. By the end of 2009, however, oil prices were at $80. In March 2009, he predicted the S&P 500 would fall below 600 that year, and possibly plummet to 200. It closed at over 1,115 however, up 24%, the largest single-year gain since 2003. CNBC's Jim Cramer wrote that Roubini was "intoxicated" with his own "prescience and vision," and should realize that things are better than he predicted; Roubini called Cramer a "buffoon," and told him to "just shut up". Although in April 2009, Roubini prophesied that the United States economy would decline in the final two quarters of 2009, and that the US economy would increase just 0.5% to 1% in 2010, in fact the U.S. economy in each of those six quarters increased at a 2.5% average annual rate. Then in June 2009 he predicted that what he called a "perfect storm" was just around the corner, but no such perfect storm ever appeared. In 2009 he also predicted that the US government would take over and nationalize a number of large banks; it did not happen. In October 2009 he predicted that the price of gold "can go above $1,000, but it can’t move up 20-30%”; he was wrong, as the price of gold rose over the next 18 months, breaking through the $1,000 barrier to over $1,400. 2020 Global Growth - At the end of 2019 the International Monetary Fund estimated global growth in 2020 to reach 3.4%, but as a result of the coronavirus pandemic, the IMF have revised its estimate in November 2020 to expect the global economy to shrink by 4.4%. See also Calculating demand forecast accuracy Errors and residuals in statistics Forecasting Forecasting accuracy Mean squared prediction error Optimism bias Reference class forecasting References Errors and residuals Forecasting Supply chain analytics