Armed Conflicts Report - Andhra Pradesh
This is the cost of Naxalism just in Andhra Pradesh. Assuming a $3000 Per capita PPP-GDP and a 30 yr remaining lifespan, each life is worth $40,000 to Indian economy. 4,500 lives translate to $180 millions not including the intangible suffering caused on various tribal groups, decelerating affect on the economy, and impact on the families of the killed."The leftist insurgency has cost more than 4,500 lives in Andhra Pradesh since 1990, according to the South Asia Intelligence Review." [The Christian Science Monitor, October 29, 2003]
"According to police, during the last ten years, the PWG and other extremist groups killed as many as 1,960 people, including 1,615 civilians and 345 policeman in the state. ... During the last ten years, 932 naxals were killed in encounters." [The Hindustan Times, January 14, 2000]
"Statistics of Naxalite violence in the new guerrilla zone showed a sharp increase. Till August end there were as many as 27 murders (including killing of 17 policemen) and 36 other offences while last year there were only six murders (including killing of one policeman) and 36 other offences; in 1995, 13 murders and 27 other offences took place. In 1994, the PWG violence was negligible." ["AP police gearing up as Naxals open new front," R Akhileshwari, DH News Service, Hyderabad, September 8, 1997]
Extrapolating this to 10 states will make the Maoism-naxalism's direct impact on Indian economy alone is around $1.8 billion over 18 years. I would put the indirect impact at least 20-30 times of that figure = $30-$50B, losing ~30-40,000 lives. It is no less than a nuke attack on Indian soil.