(2)Interest shall be credited with effect from the 31st March of each year in the following manner :(i)on the amount at the credit of a subscriber on the 31st March of the preceding year, less any sums withdrawn during the current year interest for 12 month;(ii)on sums withdrawn during the current year interest from the 1st April of the current year upto the last date of the month preceding the month of withdrawal;(iii)on all sums credited to the subscriber's accounts after the 31st March of the preceding year interest from the date of deposit up to the 31st March of the current year; and(iv)if the total amount of interest contains a fraction of a rupee it shall be rounded to the nearest whole rupee (eight annas counting as the next higher rupee).