The trend restored CLI is the product of the trend of the reference series and the amplitude adjusted CLI. This form of the CLI facilitates analyses of classic business cycles. The trend restoration alters the position of peaks and troughs: in general peaks occur later and troughs occur earlier in the trend restored series than in the amplitude adjusted series.

The formula for calculating the trend restored CLI is:

CLITR_t=(CLIAA_t*RefSeriesTD_t)/100

where CLITR_t is the trend restored CLI, CLIAA_t the amplitude adjusted CLI and RefSeriesTD_t is the trend of the reference series.

Besides the levels of the series, we also present/calculate the 12 months rate of change of the trend restored CLI ; fluctuations of these series are comparable with the growth rate of the reference series and turning points of the real GDP.