April volumes recorded a 111 percent year-on-year increase to 227,421 contracts valued at $11.4 billion (Dh41.8 billion) due to the current volatility in gold and silver prices, said the Dubai Gold and Commodities Exchange (DGCX). Year-to-date volumes on the exchange climbed by 51 per cent to aggregate 910,913 contracts while year-to-date average daily volumes also rose 51 percent to 10,975 contracts. DGCX gold futures continued last month's robust performance, rising 49 percent year-on-year in April 2011 to 46,295 contracts. Silver futures increased 298 per cent year-on-year to 9,921 contracts.