I am sorry to tell you that all of your "improvements" make the passage sound less natural. It wasn't too bad as written, although there were some errors.
1. "recorded above 6 per cent" is a bit unnatural. Simply omitting "recorded" is much better.
2. The phrase "for successive years" is completely unnecessary. It does not add to the meaning.
3. "...sentence. is it correct?" and "for successive year.construction industry". Obvious punctuation errors.
4. "construction industry in Sri Lanka is a reason to attract all the local and foreign investors in this sector." Much better would be "The booming construction industry in Sri Lanka should be attractive to both domestic and foreign investors."
Student or Learner