The Indian government introduced the Gulf rupee, also known as the Persian Gulf rupee (XPGR), as a replacement for the Indian rupee for circulation exclusively outside the country with the Reserve Bank of India [Amendment] Act, 1 May 1959. This creation of a separate currency was an attempt to reduce the strain put on India's foreign reserves by gold smuggling. After India devalued the rupee on 6 June 1966, those countries still using it – Oman, Qatar, and the Trucial States (which became the United Arab Emirates in 1971) – replaced the Gulf rupee with their own currencies. Kuwait and Bahrain had already done so in 1961 and 1965 respectively.