Required percentage =		(45 - 60)		% = -25%.
		60

There is a decline of 25% in production from 1997 to 1998.

We shall find the average production (in 10000 tonnes) for each of the given alternative pairs:

The average production of 1996 and 1997 is equal to the average production of 1995 and 2001.

The percentage increase in production compared to previous year for different years are:

In 1996 =		(40 - 25)	x 100		% = 60%.
		25

In 1997 =		(60 - 40)	x 100		% = 50%.
		40

In 1998 there is a decrease in production.

In 1999 =		(65 - 45)	x 100		% = 44.44%.
		45

In 2000 there is a decrease in production.

In 2001 =		(75 - 50)	x 100		% = 50%.
		50

In 2002 =		(80 - 75)	x 100		% = 6.67%.
		75

Clearlyl, there is maximum percentage increase in production in 1996.

Average production (in 10000 tonnes) over the given years

The productions during the years 1997, 1999, 2001 and 2002 are more than the average production.