New Delhi, Dec. 6 -- There has been a revision of the base year for calculating GDP for 5-6 times in the country since independence, said Union Finance Minister Arun Jaitley on Wednesday in the backdrop of the controversy surrounding the back-series data.

"The logic here is that with the national and the global economy expanding and growing, what would be the best global standards to calculate GDP? So, in every 10-12 years, it is revised and is brought about in accordance to the best global standards so that the ground reality of the economy gets reflected in the GDP figures," Jaitley told CNN-News18 in an interview.

When it increased, the Congress welcomed the yardstick, when it decreased, they engaged in a political conflict, calling it...