Industry has a big share in the domestic product as well.
In 1975 1,5% of the domestic product was spent on development aid.
Gross domestic product is up by almost 2 percent over last year.
The total cost was around $1 billion, or 0.2 percent of gross domestic product.
The national energy bill is about $475 billion a year, nearly 10 percent of the gross domestic product.
Now, these four guys are doing their part for the gross domestic product.
In 2003 some 4.5 percent of gross domestic product was spent on education.
The gross domestic product last year was just $1.7 billion.
But taking action now would cost just 1% of global gross domestic product, the 700-page study says.
"I think the days of growing at two to three times the gross domestic product are over," he said.
