Japan’s currency has fallen 11.6 percent this year, the most out of its major peers, according to the Bloomberg Correlation-Weighted Indexes, which track 10 developed-nation currencies. The US dollar has been the second-worst performer, losing 3.1 percent. The euro has declined 1.4 percent, while the New Zealand dollar has been the best performer, rising 6.5 percent.
The Dollar Index, which measures the currency against the euro, yen, pound, Swiss franc, Canadian dollar and Swedish krona, ended the week down 1.1 percent to 79.561.



