In the 1960s, the UK found it difficult to keep the value of sterling as it was, with its role as official reserve currency even within the sterling area. In 1964, sterling was 83% of the official reserves of overseas sterling area countries, but this share had decreased to 75% in 1966 and to 65% in 1967.[12] When sterling was devalued by the UK in 1967, and Hong Kong dollar's peg to the pound resulted in a re-valuation of Hong Kong dollar from $16 to $14.5, a 10% re-valuation against the pound and 5.7% devaluation against the US dollar.