The figures will likely strengthen concern among economists already worried about how Japan's domestic-driven recovery will fare once the nation's sales tax is raised to 8% from 5% in April.

I parse the sentence like this:

The figures / will likely strengthen / concern / among economists/ (who/ are) already / worried/ about (how /Japan's domestic-driven recovery /will fare / once / the nation's sales tax / is raised / to 8% from 5% / in April). Economists / expect / at least a temporary chill / in demand (when / the new rate / goes into effect.)

I wonder whether it is right.

The figures will likely strengthen concern among economists already worried about how Japan's domestic-driven recovery will fare once the nation's sales tax is raised to 8% from 5% in April.

I parse the sentence like this:

The figures / will likely strengthen / concern / among economists/ (who/ are) already / worried/ about (how /Japan's domestic-driven recovery /will fare / once / the nation's sales tax / is raised / to 8% from 5% / in April). Economists / expect / at least a temporary chill / in demand (when / the new rate / goes into effect.)

I wonder whether the way I parse the sentence is right.

The figures will likely strengthen concern among economists already worried about how Japan's domestic-driven recovery will fare once the nation's sales tax is raised to 8% from 5% in April.

The figures will likely strengthen concern among economists already worried about how Japan's domestic-driven recovery will fare once the nation's sales tax is raised to 8% from 5% in April.

I parse the sentence like this:

The figures / will likely strengthen / concern / among economists/ (who/ are) already / worried/ about (how /Japan's domestic-driven recovery /will fare / once / the nation's sales tax / is raised / to 8% from 5% / in April). Economists / expect / at least a temporary chill / in demand (when / the new rate / goes into effect.)

I wonder whether it is right.