State Bank of Pakistan said on Saturday that 15 percent discount rate would remain unchanged for the fiscal year ending in June. Announcing monetary policy in Karachi, Governor State Bank Salim Raza said that decrease in manufacturing and liquidity were major challenges of the country. He said that due to better performances of services and agriculture sectors, economic growth rate was recorded at 3.7 percent. The central bank raised interest rates by 2 percentage points to 15 percent in November, the same month it signed a$7.6 billion loan with the International Monetary Fund to stave off a balance of payments crisis.