The cost of prime office space in Singapore is expected to halve by the end of the year, to hit almost five-year lows. It fell sharply by 25 per cent to about S$9.20 per square foot per month in the first quarter this year, compared to the previous quarter. Analysts expect a similar fall in the second quarter, before a moderation in the second half of the year. 2.4 million square feet of office space...