The rupee closed at 84.1150 against the U.S. dollar after touching the forever low of 84.1225 earlier in the market session. 

The heavy demand for the dollar from importers is said to have triggered the decline to 83.985 in Thursday's  intraday trading

When NRIs invest in existing Indian mutual fund schemes, their returns are diminished by approximately 3% annually due to the depreciation of the rupee against the dollar, as both the investment and withdrawal are in INR.