Because of the drastic fluctuations in the trade volumes in the
past, it is challenging to forecast future trade volumes. The world
financial system is now undergoing a global economic crisis of
staggering proportions. That is, all of the world countries are exposed
to the 2008/2009 World Economic Crisis. Therefore, another
scenario taking economic depression into account (Scenario 5) is
included with the four scenarios presented above in light of the
current world economic crisis. In this scenario, the original growth
rates of the population and the GDP are selected and both the import
and the export growth rates are assumed as 5%. Furthermore,
the current economic situation [70] is taken into account by considering
the import and export growth rates as 18% and 23.4% in
2008 and 31% and 23.5% in 2009, respectively. All scenarios
are summarized in Table 10.