Real GDP in the first half of 2011 increased by 5.2%.
Real GDP fell in four years by nearly 20%, with 2002 the worst year.
As a result, in 1981 real GDP declined by 4.4 percent.
It is a period of economic growth as measured by a rise in real GDP.
They expect 2012 real GDP to grow 2.2pc against 2.7pc prediction.
Real GDP grew at a solid 3.2 percent annual rate in the first quarter of 2010.
The number of companies went down by 15%, real GDP contracted about 14% and unemployment rose from 3% to nearly 20% in four years.
Real GDP is equal to effective demand according to the equation above.
As a result, the price level would drop and real GDP would increase.
Real GDP grew at an average annual rate of less than 3% per year for 1997 and 1998 and only 1% in 1999.