The bar diagram given below shows the foreign exchange reserves of a country (in million US $)

a) The foreign exchange reserves in 2005-06 is how much many times that of 2001 - 02?

b) What is the percentage increase of foreign exchange reserves in 2003-04 over 2002-03?

c) Determine the percentage increase of foreign exchange reserves in each year (if any) in the entire data. ln which year the percentage increase is observed the highest?