There is some dispute over the current and historical number of Tibetans. The Central Tibetan Administration claims that the 5.4 million number is a decrease from 6.3 million in 1959 while the Chinese government claims that it is an increase from 2.7 million in 1954. However, the question depends on the definition and extent of "Tibet"; the region claimed by the CTA is more expansive and China more diminutive. Also, the Tibetan administration did not take a formal census of its territory in the 1950s; the numbers provided by the administration at the time were "based on informed guesswork".