Bangladesh's foreign exchange reserves have declined again and now stand at $19.93 billion after rise and fall for several months.According to the Bangladesh Bank, on Thursday, January 23, the foreign exchange reserves stand at $19.93 billion under International Monetary Fund’s accounting rules BPM-6, while the central data shows the figure is $25.22 billion.On January 15, the figure was $20.13 billion as per IMF’s BPM-6, while the same was $25.18 billion.