CurrencyShares Japanese Yen (NYSEArca: FXY) is one of the worst-performing currency ETFs in 2012 and has been moving straight down the past two weeks on speculation the Bank of Japan will eventually be forced to launch more easing measures to boost the flagging economy.

However, the Bank of Japan kept its monetary policy unchanged following a meeting this week. It announced stimulus measures in September and October. [Currency ETF Wars]

The central bank is standing its ground for now “in the face of calls from the country’s likely next prime minister to pursue ‘unlimited’ easing to revive an economy widely seen in recession,” Reuters reports. “The leader of the main opposition, Shinzo Abe, has put the central bank at the center of economic debate ahead of a December 16 national election that surveys show his party would win, signaling his government would put the bank under much greater pressure to ease policy.”

The Bank of Japan said it expects the economy to remain “relatively weak” amid “a high degree of uncertainty.”

Separately, data released Wednesday showed Japan is suffering its worst year for exports since the global slowdown in 2009, Bloomberg News reports.

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