there is an increase in the number of students from 20 to 40 for the first three years.- the amount of gold exported to Vietnam which declines rapidly from 40 to 20 kilograms for the first two years remains unchanged in the last years.- the year 1997 experienced a stable trend in the number of overseas students which saw rise to 2 thousand in 2003.- the figure then saw a significant fall to 2 million for the first two years, follow by a recovery in the final year.- the period from 1992 to 1998 saw a quick drop from 20 to 10 units in the amount of electricity which then underwent a stable changer for the last two years.
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