Over the next decade BRICs countries will contribute twice as much to global growth as the G3
According to Goldman Sachs BRICs Monthly Issue No 10/03:
The last decade saw the BRICs make their mark on the global economic landscape. Over the past 10 years they have contributed over a third of world GDP growth and grown from one-sixth of the world economy to almost a quarter (in PPP terms). Looking forward to the coming decade, we expect this trend to continue and become even more pronounced.

