And there has been a fivefold increase in night raids by allied special forces against taliban commanders .
盟军特种部队针对塔利班指挥官的夜间突袭行动已经增加了五倍。
The brookings institution , a think-tank in washington , dc , calculated in 2011 that the amounts committed through ppp for infrastructure increased fivefold between 1998-2007 .
For example , prices for european impressionists , such as monet and renoir , surged almost fivefold in the two years before lehman collapsed ( just as they did in 1989 before the japanese stock market peaked ) but lost almost all those gains shortly afterwards .