If the value of exports and imports of services is also taken into account,the ratio is even higher,at 260 per cent in 1999,as compared to 181 per cent in both 1970 and 1980,and 260 per cent in 1990.

• 如果把服务输出及服务输入价值也计算在内，比率便更高，一九九九年为260%25，而一九七零年、一九八零年及一九九零年则分别为181%25、181%25及260%25。