Refer to the following chart and solve the questions based on it.
The figure below represents sales and net profit (in Rs crore) of IVP Ltd, for five years from 1994-1995 to 1998-1999. During this period, the sales increased from Rs 100 crore to Rs 680 crore. Correspondingly, the net profit increased from Rs 2.5 crore to Rs 12 crore. (Net profit is defined as the excess of sales over total costs.)
The highest percentage growth in net profit, relative to the previous year, was achieved in