      There is one drawback to using the GNP as a forecasting tool, however:the GNP figure is published on a quarterly basis. Because of the time delaybetween releases, market participants must use other tools to anticipatethe next quarterly figure. Almost all other economic indicators provideinformation about the GNP and are therefore used as GNP forecasting tools.The GNP is revised during the last week of each month, but less weight isplaced on these revisions than the quarterly GNP report.