Indian Institute of Foreign Trade 2009 Solved Paper

Total oil used in the year 1996=10+700+1794+104=2608.
Therefore, Oil used by Suburban as a proportion of Total Oil Used =

104

2608

×100=3.99percent
Similarly, we can calculate for the remaining years.From the table, we can see that oil used by suburban as a proportion of total oil used is the highest for the year 2008.
Hence, option D is the correct answer.