Bank of Japan Governor Kazuo Ueda has plenty of data to support the case for raising the benchmark rate in December, an outcome that would mark the first tightening of policy three times in a calendar year since the peak of Japan’s asset bubble in 1989.

The Japanese yen rose to a six-week high against the dollar Friday. While trading was thin because of the Black Friday holiday in the U.S., the moves are still worth watching after volatility in the Asian currency sparked market turmoil earlier this year.

The BOJ ended negative interest rates in March and raised its short-term policy rate to 0.25% in July on the view Japan was making steady progress towards durably achieving its 2% inflation target. Governor Ueda has said the BOJ will keep raising rates if inflation remains on track to stably hit 2% as it projects.