Jamaica is regarded as a bilingual country, with two major languages in use by the population. The official language is English, which is "used in all domains of public life", including the government, the legal system, the media, and education. However, the primary spoken language is an English-based creole called Jamaican Patois (or Patwa). The two exist in a dialect continuum, with speakers using a different register of speech depending on context and whom they are speaking to. "Pure" Patois, though sometimes seen as merely a particularly aberrant dialect of English, is essentially mutually unintelligible with standard English and is best thought of a separate language. A 2007 survey by the Jamaican Language Unit found that 17.1 percent of the population were monolingual in Jamaican Standard English (JSE), 36.5 percent were monolingual in Patois, and 46.4 percent were bilingual, although earlier surveys had pointed to a greater degree of bilinguality (up to 90 percent). The Jamaican education system has only recently begun to offer formal instruction in Patois, while retaining JSE as the "official language of instruction".