REUTERS The National Bank of Ukraine (NBU) sold US$200 million on the interbank foreign exchange market from September 30 to October 4, which was $157.5 million more than it bought. Read alsoUkrainians sell US$88.8 mln more currency than they buy in Sept 2019 Last week, the regulator resumed sales of foreign currency for the first time after an almost two-month break, the NBU said on its website on October 7. However, the central bank&#39;s purchases of foreign currency have exceeded sales by almost nine times, or by $3.751 billion, since the beginning of the year, the report said. As UNIAN reported earlier, the National Bank in September 2019 bought $300 billion on the interbank forex market to replenish the country&#39;s international reserves. Last week, the regulator resumed interventions on the interbank forex market to sell foreign currency after an almost two-month break and sold $200 million to prop up the hryvnia. The NBU says that excess forex fluctuations in early October were caused by a decrease in the supply of currency with a simultaneous increase in demand under the influence of psychological factors. Experts attribute the recent weakening of the hryvnia to a decline in foreign currency injections by non-residents into domestic government bonds, but yet they see no reason for a drastic weakening of the hryvnia since foreign currency earnings from grain exports remain high.