Hyper inflationary environment: IFRS Restatement

When it says restatement for inflation, is that ALL prior reporting periods? For example, if it was determined at the end of 2014 that there’s an inflationary environment in Boliva, do you restate all prior periods or just the periods with the hyperinflation (last 3-years or so)?

My guess is just the current period, the b/s effect would be cumulative and income statement is relevant to a given year anyways.

thanks ro424