Rwanda's economy suffered heavily during the 1994 genocide, with widespread loss of life, failure to maintain infrastructure, looting, and neglect of important cash crops. This caused a large drop in GDP and destroyed the country's ability to attract private and external investment. The economy has since strengthened, with per-capita GDP (PPP) estimated at $2,444 in 2019, compared with $416 in 1994. Major export markets include China, Germany, and the United States. The economy is managed by the central National Bank of Rwanda and the currency is the Rwandan franc; in December 2019, the exchange rate was 910 francs to one United States dollar. Rwanda joined the East African Community in 2007, and has ratified a plan for monetary union amongst the five member nations, which could eventually lead to a common East African shilling.