The total population was estimated at 42 to 58 individuals.

As of 2003, the total population was estimated at 1,200 individuals.

One survey estimated the population size at more than 140,000 individuals.

The population has been estimated at between 8,200 and 14,000 individuals.

As of 2010, the total population is estimated at 400 individuals.

The population in China has been estimated at less than 500 individuals.

The current population is estimated at between 10000 and 46000 individuals.

The population of this species is estimated at less than 6,000 individuals.

The total population is estimated at 550 to 700 individuals.

The world population was estimated at less than 1,000 individuals in 2008.