Even the US dollar and euro, supposedly bastions of stability, have seen their exchange rate jump from US$0.80 per euro in 2002 to US$1.60 in 2008 (100% jump),

Even the US dollar and euro, supposedly bastions of stability, have seen their exchange rate jump from US$0.80 per euro in 2002 to US$1.60 in 2008 (100% jump), only to drop back down to US$1.20 in 2010 (25% drop), then jump to US$1.45 in 2011 (20% jump), only to drop back down to around US$1.29 today.[3] Are these movements different than a historical norm? You provide numbers with no context - it seems as if a movement of 100% in 6 years is meant to be shocking because 100% is a big number.