Australian exports have a stable market in the top three economies of the world. China, for one, moves on to overtake Japan as the second largest economy, next to the United States.

Japan posted a $1.29 trillion gross domestic product (GDP) for the first half of the year, while China boasts of a $1.34 trillion GDP for the same period. The figures led economists to forecast a change in the economic ranking at year's end.

The International Monetary Fund (IMF) predicts a $5.4 trillion output for China, but a slightly lower output for Japan in 2010. The GDP for Japan is expected to reach $5.3 trillion this year. Exports gave China a 10.3 percent growth in the first quarter. Trade surplus in July alone hit $28.7 billion.

In contrast, Japan continues to maintain a strong currency which eventually hurts exports. A highly valued Japanese yen resulted in a 0.04 percent growth rate in the first quarter. A sluggish growth is expected with the rising number of aging nationals.

Economists are confident of an 8 percent annual growth rate for China in the next few years. The estimate growth would result in a Chinese economy that is twice the size of the Japanese economy. Moreover, the growth rate is expected to put China as the world's largest economy after 10 years.