Japan's economy will grow by an amount equivalent to New Zealand's economy in the blink of an eye on Thursday.

That's when the government announces the revision of gross domestic product data, using a new accounting standard. Nominal GDP was ¥500.6 trillion for fiscal year 2015, according to the most recent reading released on Nov. 14.

One of the most important changes will add research and development to the sum of all goods and services produced in the nation. This will bring Prime Minister Shinzo Abe closer to his goal of expanding GDP to ¥600 trillion, although it won't alter the fundamental problem of weak economic growth in Japan.