The bar graph given below shows the data of the production of paper (in lakh tonnes) by three different companies X, Y and Z over the years.

For which of the following years, the percentage rise/fall in production from the previous year is the maximum for Company Y?

Percentage change (rise/fall) in the production of Company Y in comparison to the previous year, for different years are:

For 1997, $[\frac{\left(\right(35-25\left)\right) }{25} \times 100]\%=40\%$

For 1998, $[\frac{\left(\right(35-35\left)\right)}{35} \times 100]\%=0\%$

For 1999,  $[\frac{\left(\right(40-35\left)\right)}{35} \times 100]\%=14.29\%$

For 2000, $[\frac{\left(\right(50-40\left)\right) }{40} \times 100]\%=25\%$

Hence, the maximum percentage rise/fall in the production of Company Y is for 1997.